diff --git a/.devproxy/api-specs/sharepoint.yaml b/.devproxy/api-specs/sharepoint.yaml
index 45cde8ac3f7..f5d060dc03f 100644
--- a/.devproxy/api-specs/sharepoint.yaml
+++ b/.devproxy/api-specs/sharepoint.yaml
@@ -84,6 +84,35 @@ paths:
       responses:
         200:
           description: OK
+  /_api/Lists(guid{listId})/items({itemId})/Archive:
+    post:
+      parameters:
+        - name: listId
+          in: path
+          required: true
+          description: list GUID
+          schema:
+            type: string
+          example: "'b2307a39-e878-458b-bc90-03bc578531d6'"
+        - name: itemId
+          in: path
+          required: true
+          description: list item ID
+          schema:
+            type: integer
+          example: 1
+      security:
+        - delegated:
+          - AllSites.Write
+          - AllSites.Manage
+          - AllSites.FullControl
+        - application:
+          - Sites.ReadWrite.All
+          - Sites.Manage.All
+          - Sites.FullControl.All
+      responses:
+        200:
+          description: OK
   /_api/SP_TenantSettings_Current:
     get:
       security:
@@ -238,6 +267,30 @@ paths:
       responses:
         200:
           description: OK
+  /_api/web/GetFileByServerRelativePath(DecodedUrl={filePath}):
+    get:
+      parameters:
+        - name: filePath
+          in: path
+          required: true
+          description: URL-encoded server-relative path to the file
+          schema:
+            type: string
+          example: "'%2Fsites%2FM365SOBA%2Fshared%20documents%2Fgeneral%2Fdocument.docx'"
+      security:
+        - delegated:
+          - AllSites.Read
+          - AllSites.Write
+          - AllSites.Manage
+          - AllSites.FullControl
+        - application:
+          - Sites.Read.All
+          - Sites.ReadWrite.All
+          - Sites.Manage.All
+          - Sites.FullControl.All
+      responses:
+        200:
+          description: OK
   /_api/web/GetFileByServerRelativePath(DecodedUrl={filePath})/$value:
     get:
       parameters:
diff --git a/docs/docs/cmd/spo/file/file-archive.mdx b/docs/docs/cmd/spo/file/file-archive.mdx
new file mode 100644
index 00000000000..c338fd36be1
--- /dev/null
+++ b/docs/docs/cmd/spo/file/file-archive.mdx
@@ -0,0 +1,106 @@
+import Global from '../../_global.mdx';
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+# spo file archive
+
+Archives a file
+
+## Usage
+
+```sh
+m365 spo file archive [options]
+```
+
+## Options
+
+```md definition-list
+`-u, --webUrl <webUrl>`
+: The URL of the site where the file is located.
+
+`--url [url]`
+: The server- or site-relative decoded URL of the file to archive. Specify either `url` or `id`, but not both.
+
+`-i, --id [id]`
+: The UniqueId (GUID) of the file to archive. Specify either `url` or `id`, but not both.
+
+`-f, --force`
+: Don't prompt for confirmation.
+```
+
+<Global />
+
+## Permissions
+
+<Tabs>
+  <TabItem value="Delegated">
+
+  | Resource   | Permissions    |
+  |------------|----------------|
+  | SharePoint | AllSites.Write |
+
+  </TabItem>
+  <TabItem value="Application">
+
+  | Resource   | Permissions         |
+  |------------|---------------------|
+  | SharePoint | Sites.ReadWrite.All |
+
+  </TabItem>
+</Tabs>
+
+## Examples
+
+Archive a file without prompting for confirmation
+
+```sh
+m365 spo file archive --webUrl https://contoso.sharepoint.com/sites/Marketing --id 7a8c9207-7745-4cda-b0e2-be2618ee3030 --force
+```
+
+Archive a file by URL with prompting for confirmation
+
+```sh
+m365 spo file archive --webUrl https://contoso.sharepoint.com/sites/Marketing --url '/sites/Marketing/shared documents/document.docx'
+```
+
+## Response
+
+<Tabs>
+  <TabItem value="JSON">
+
+  ```json
+  {
+    "value": "fullyArchived"
+  }
+  ```
+
+  </TabItem>
+  <TabItem value="Text">
+
+  ```text
+  value: fullyArchived
+  ```
+
+  </TabItem>
+  <TabItem value="CSV">
+
+  ```csv
+  value
+  fullyArchived
+  ```
+
+  </TabItem>
+  <TabItem value="Markdown">
+
+  ```md
+  # spo file archive --debug "false" --verbose "false" --webUrl "https://afonline.sharepoint.com/sites/M365SOBA" --url "/sites/M365SOBA/shared documents/general/M365 responsibility.pptx" --force "true"
+
+  Date: 4/4/2026
+
+  Property | Value
+  ---------|-------
+  value | fullyArchived
+  ```
+
+  </TabItem>
+</Tabs>
diff --git a/docs/src/config/sidebars.ts b/docs/src/config/sidebars.ts
index e0f837d676a..b04d4ade73c 100644
--- a/docs/src/config/sidebars.ts
+++ b/docs/src/config/sidebars.ts
@@ -2686,6 +2686,11 @@ const sidebars: SidebarsConfig = {
               label: 'file add',
               id: 'cmd/spo/file/file-add'
             },
+            {
+              type: 'doc',
+              label: 'file archive',
+              id: 'cmd/spo/file/file-archive'
+            },
             {
               type: 'doc',
               label: 'file checkin',
diff --git a/src/m365/spo/commands.ts b/src/m365/spo/commands.ts
index 238ce27cb9e..42b1a78e4c3 100644
--- a/src/m365/spo/commands.ts
+++ b/src/m365/spo/commands.ts
@@ -62,6 +62,7 @@ export default {
   FIELD_REMOVE: `${prefix} field remove`,
   FIELD_SET: `${prefix} field set`,
   FILE_ADD: `${prefix} file add`,
+  FILE_ARCHIVE: `${prefix} file archive`,
   FILE_CHECKIN: `${prefix} file checkin`,
   FILE_CHECKOUT: `${prefix} file checkout`,
   FILE_CHECKOUT_UNDO: `${prefix} file checkout undo`,
diff --git a/src/m365/spo/commands/file/file-archive.spec.ts b/src/m365/spo/commands/file/file-archive.spec.ts
new file mode 100644
index 00000000000..7cb133353b1
--- /dev/null
+++ b/src/m365/spo/commands/file/file-archive.spec.ts
@@ -0,0 +1,249 @@
+import assert from 'assert';
+import sinon from 'sinon';
+import auth from '../../../../Auth.js';
+import { cli } from '../../../../cli/cli.js';
+import { CommandInfo } from '../../../../cli/CommandInfo.js';
+import { Logger } from '../../../../cli/Logger.js';
+import { CommandError } from '../../../../Command.js';
+import request from '../../../../request.js';
+import { telemetry } from '../../../../telemetry.js';
+import { pid } from '../../../../utils/pid.js';
+import { session } from '../../../../utils/session.js';
+import { sinonUtil } from '../../../../utils/sinonUtil.js';
+import { z } from 'zod';
+import commands from '../../commands.js';
+import command from './file-archive.js';
+
+describe(commands.FILE_ARCHIVE, () => {
+  let log: any[];
+  let logger: Logger;
+  let loggerLogSpy: sinon.SinonSpy;
+  let commandInfo: CommandInfo;
+  let commandOptionsSchema: z.ZodTypeAny;
+  let confirmationPromptStub: sinon.SinonStub;
+
+  const successResponse = {
+    value: "fullyArchived"
+  };
+
+  before(() => {
+    sinon.stub(auth, 'restoreAuth').resolves();
+    sinon.stub(telemetry, 'trackEvent').resolves();
+    sinon.stub(pid, 'getProcessName').returns('');
+    sinon.stub(session, 'getId').returns('');
+
+    auth.connection.active = true;
+    auth.connection.spoUrl = 'https://contoso.sharepoint.com';
+    commandInfo = cli.getCommandInfo(command);
+    commandOptionsSchema = commandInfo.command.getSchemaToParse()!;
+  });
+
+  beforeEach(() => {
+    log = [];
+    logger = {
+      log: async (msg: string) => {
+        log.push(msg);
+      },
+      logRaw: async (msg: string) => {
+        log.push(msg);
+      },
+      logToStderr: async (msg: string) => {
+        log.push(msg);
+      }
+    };
+    loggerLogSpy = sinon.spy(logger, 'log');
+    confirmationPromptStub = sinon.stub(cli, 'promptForConfirmation').resolves(false);
+  });
+
+  afterEach(() => {
+    sinonUtil.restore([
+      request.get,
+      request.post,
+      cli.promptForConfirmation
+    ]);
+  });
+
+  after(() => {
+    sinon.restore();
+    auth.connection.active = false;
+    auth.connection.spoUrl = undefined;
+  });
+
+  it('has correct name', () => {
+    assert.strictEqual(command.name, commands.FILE_ARCHIVE);
+  });
+
+  it('has a description', () => {
+    assert.notStrictEqual(command.description, null);
+  });
+
+  it('excludes options from URL processing', () => {
+    assert.deepStrictEqual((command as any).getExcludedOptionsWithUrls(), ['url']);
+  });
+
+  it('fails validation if webUrl is not a valid SharePoint URL', async () => {
+    const actual = commandOptionsSchema.safeParse({
+      webUrl: 'invalid-url',
+      id: '00000000-0000-0000-0000-000000000000',
+      force: true
+    });
+    assert.strictEqual(actual.success, false);
+  });
+
+  it('fails validation if both url and id are specified', async () => {
+    const actual = commandOptionsSchema.safeParse({
+      webUrl: 'https://contoso.sharepoint.com',
+      url: '/sites/test/Shared documents/document.docx',
+      id: '00000000-0000-0000-0000-000000000000',
+      force: true
+    });
+    assert.strictEqual(actual.success, false);
+  });
+
+  it('fails validation if neither url nor id are specified', async () => {
+    const actual = commandOptionsSchema.safeParse({
+      webUrl: 'https://contoso.sharepoint.com',
+      force: true
+    });
+    assert.strictEqual(actual.success, false);
+  });
+
+  it('fails validation if the id option is not a valid GUID', async () => {
+    const actual = commandOptionsSchema.safeParse({
+      webUrl: 'https://contoso.sharepoint.com',
+      id: 'invalid-guid',
+      force: true
+    });
+    assert.strictEqual(actual.success, false);
+  });
+
+  it('passes validation with valid options (url)', async () => {
+    const actual = commandOptionsSchema.safeParse({
+      webUrl: 'https://contoso.sharepoint.com',
+      url: '/sites/test/Shared documents/document.docx',
+      force: true
+    });
+    assert.strictEqual(actual.success, true);
+  });
+
+  it('passes validation with valid options (id)', async () => {
+    const actual = commandOptionsSchema.safeParse({
+      webUrl: 'https://contoso.sharepoint.com',
+      id: '00000000-0000-0000-0000-000000000000',
+      force: true
+    });
+    assert.strictEqual(actual.success, true);
+  });
+
+  it('prompts before archiving file when confirmation argument not passed', async () => {
+    await command.action(logger, {
+      options: {
+        webUrl: 'https://contoso.sharepoint.com',
+        id: '00000000-0000-0000-0000-000000000000'
+      }
+    });
+    assert(confirmationPromptStub.calledOnce);
+  });
+
+  it('aborts archiving file when prompt not confirmed', async () => {
+    await command.action(logger, {
+      options: {
+        webUrl: 'https://contoso.sharepoint.com',
+        url: '/sites/test/Shared documents/document.docx'
+      }
+    });
+    assert(loggerLogSpy.notCalled);
+  });
+
+  it('archives file by url', async () => {
+    sinon.stub(request, 'get').callsFake(async (opts) => {
+      if (opts.url === `https://contoso.sharepoint.com/sites/test/_api/web/GetFileByServerRelativePath(DecodedUrl=@f)?$select=ListId&$expand=ListItemAllFields&@f='%2Fsites%2Ftest%2FShared%20documents%2Fdocument.docx'`) {
+        return {
+          ListId: 'b2307a39-e878-458b-bc90-03bc578531d6',
+          ListItemAllFields: {
+            Id: 1
+          }
+        };
+      }
+
+      throw 'Invalid request';
+    });
+
+    sinon.stub(request, 'post').callsFake(async (opts) => {
+      if (opts.url === `https://contoso.sharepoint.com/sites/test/_api/Lists(guid'b2307a39-e878-458b-bc90-03bc578531d6')/items(1)/Archive`) {
+        return successResponse;
+      }
+
+      throw 'Invalid request';
+    });
+
+    await command.action(logger, {
+      options: {
+        webUrl: 'https://contoso.sharepoint.com/sites/test',
+        url: '/sites/test/Shared documents/document.docx',
+        force: true
+      }
+    });
+
+    assert(loggerLogSpy.calledOnceWithExactly(successResponse));
+  });
+
+  it('archives file by id', async () => {
+    sinon.stub(request, 'get').callsFake(async (opts) => {
+      if (opts.url === `https://contoso.sharepoint.com/sites/test/_api/web/GetFileById('00000000-0000-0000-0000-000000000000')?$select=ListId&$expand=ListItemAllFields`) {
+        return {
+          ListId: 'b2307a39-e878-458b-bc90-03bc578531d6',
+          ListItemAllFields: {
+            Id: 1
+          }
+        };
+      }
+
+      throw 'Invalid request';
+    }
+    );
+
+    sinon.stub(request, 'post').callsFake(async (opts) => {
+      if (opts.url === `https://contoso.sharepoint.com/sites/test/_api/Lists(guid'b2307a39-e878-458b-bc90-03bc578531d6')/items(1)/Archive`) {
+        return successResponse;
+      }
+
+      throw 'Invalid request';
+    });
+
+    await command.action(logger, {
+      options: {
+        webUrl: 'https://contoso.sharepoint.com/sites/test',
+        id: '00000000-0000-0000-0000-000000000000',
+        verbose: true,
+        force: true
+      }
+    });
+
+    assert(loggerLogSpy.calledOnceWithExactly(successResponse));
+  });
+
+  it('handles error correctly', async () => {
+    const error = {
+      error: {
+        'odata.error': {
+          code: "-2130575338, Microsoft.SharePoint.SPException",
+          message: {
+            lang: "en-US",
+            value: 'The file /sites/test/Shared documents/document.docx does not exist.'
+          }
+        }
+      }
+    };
+
+    sinon.stub(request, 'get').rejects(error);
+
+    await assert.rejects(command.action(logger, {
+      options: {
+        webUrl: 'https://contoso.sharepoint.com/sites/test',
+        url: '/sites/test/Shared documents/document.docx',
+        force: true
+      }
+    }), new CommandError(error.error['odata.error'].message.value));
+  });
+});
diff --git a/src/m365/spo/commands/file/file-archive.ts b/src/m365/spo/commands/file/file-archive.ts
new file mode 100644
index 00000000000..aacb8126cfa
--- /dev/null
+++ b/src/m365/spo/commands/file/file-archive.ts
@@ -0,0 +1,111 @@
+import commands from '../../commands.js';
+import { Logger } from '../../../../cli/Logger.js';
+import SpoCommand from '../../../base/SpoCommand.js';
+import { globalOptionsZod } from '../../../../Command.js';
+import { z } from 'zod';
+import { validation } from '../../../../utils/validation.js';
+import { cli } from '../../../../cli/cli.js';
+import { urlUtil } from '../../../../utils/urlUtil.js';
+import request, { CliRequestOptions } from '../../../../request.js';
+import { formatting } from '../../../../utils/formatting.js';
+
+export const options = z.strictObject({
+  ...globalOptionsZod.shape,
+  webUrl: z.string()
+    .refine(url => validation.isValidSharePointUrl(url) === true, {
+      error: e => `'${e.input}' is not a valid SharePoint Online site URL.`
+    })
+    .alias('u'),
+  url: z.string().optional(),
+  id: z.uuid().optional().alias('i'),
+  force: z.boolean().optional().alias('f')
+});
+
+declare type Options = z.infer<typeof options>;
+
+interface CommandArgs {
+  options: Options;
+}
+
+class SpoFileArchiveCommand extends SpoCommand {
+  public get name(): string {
+    return commands.FILE_ARCHIVE;
+  }
+
+  public get description(): string {
+    return 'Archives a file';
+  }
+
+  public get schema(): z.ZodType | undefined {
+    return options;
+  }
+
+  public getRefinedSchema(schema: typeof options): z.ZodObject<any> | undefined {
+    return schema
+      .refine(options => [options.url, options.id].filter(o => o !== undefined).length === 1, {
+        error: `Specify 'url' or 'id', but not both.`
+      });
+  }
+
+  protected getExcludedOptionsWithUrls(): string[] | undefined {
+    return ['url'];
+  }
+
+  public async commandAction(logger: Logger, args: CommandArgs): Promise<void> {
+    const { webUrl, url, id, force, verbose } = args.options;
+
+    if (!force) {
+      const result = await cli.promptForConfirmation({ message: `Are you sure you want to archive the file ${url || id} at site ${webUrl}?` });
+      if (!result) {
+        return;
+      }
+    }
+
+    try {
+      if (verbose) {
+        await logger.logToStderr(`Archiving file ${url || id} at site ${webUrl}...`);
+      }
+
+      let requestUrl: string = '';
+
+      if (id) {
+        requestUrl = `${webUrl}/_api/web/GetFileById('${formatting.encodeQueryParameter(id)}')`;
+      }
+      else if (url) {
+        requestUrl = `${webUrl}/_api/web/GetFileByServerRelativePath(DecodedUrl=@f)`;
+      }
+
+      let queryString: string = '?$select=ListId&$expand=ListItemAllFields';
+
+      if (url) {
+        const serverRelativePath = urlUtil.getServerRelativePath(webUrl, url);
+        queryString += `&@f='${formatting.encodeQueryParameter(serverRelativePath)}'`;
+      }
+
+      const fileInfo = await request.get<{ ListId: string; ListItemAllFields: { Id: number } }>({
+        url: requestUrl + queryString,
+        headers: {
+          accept: 'application/json;odata=nometadata'
+        },
+        responseType: 'json'
+      });
+
+      const archiveUrl = `${webUrl}/_api/Lists(guid'${fileInfo.ListId}')/items(${fileInfo.ListItemAllFields.Id})/Archive`;
+      const requestOptions: CliRequestOptions = {
+        url: archiveUrl,
+        headers: {
+          accept: 'application/json;odata=nometadata'
+        },
+        responseType: 'json'
+      };
+
+      const response = await request.post(requestOptions);
+      await logger.log(response);
+    }
+    catch (err: any) {
+      this.handleRejectedODataJsonPromise(err);
+    }
+  }
+}
+
+export default new SpoFileArchiveCommand();
\ No newline at end of file