diff --git a/packages/docusaurus-plugin-sitemap/src/index.ts b/packages/docusaurus-plugin-sitemap/src/index.ts
index 9d9f75a442c5..3044f1feff8b 100644
--- a/packages/docusaurus-plugin-sitemap/src/index.ts
+++ b/packages/docusaurus-plugin-sitemap/src/index.ts
@@ -32,7 +32,7 @@ export default function pluginSitemap(
       );
 
       // Write sitemap file.
-      const sitemapPath = path.join(outDir, 'sitemap.xml');
+      const sitemapPath = path.join(outDir, options.filename);
       try {
         await fs.outputFile(sitemapPath, generatedSitemap);
       } catch (err) {
diff --git a/packages/docusaurus-plugin-sitemap/src/options.ts b/packages/docusaurus-plugin-sitemap/src/options.ts
index 5a8302424e83..9cc1fe1b8cc1 100644
--- a/packages/docusaurus-plugin-sitemap/src/options.ts
+++ b/packages/docusaurus-plugin-sitemap/src/options.ts
@@ -19,6 +19,11 @@ export type PluginOptions = {
    * sitemap. Note that you may need to include the base URL in here.
    */
   ignorePatterns: string[];
+  /**
+   * The path to the created sitemap file, relative to the output directory.
+   * Useful if you have two plugin instances outputting two files.
+   */
+  filename: string;
 };
 
 export type Options = Partial<PluginOptions>;
@@ -27,9 +32,11 @@ export const DEFAULT_OPTIONS: PluginOptions = {
   changefreq: EnumChangefreq.WEEKLY,
   priority: 0.5,
   ignorePatterns: [],
+  filename: 'sitemap.xml',
 };
 
-const PluginOptionSchema = Joi.object({
+const PluginOptionSchema = Joi.object<PluginOptions>({
+  // @ts-expect-error: forbidden
   cacheTime: Joi.forbidden().messages({
     'any.unknown':
       'Option `cacheTime` in sitemap config is deprecated. Please remove it.',
@@ -45,6 +52,7 @@ const PluginOptionSchema = Joi.object({
     'any.unknown':
       'Please use the new Docusaurus global trailingSlash config instead, and the sitemaps plugin will use it.',
   }),
+  filename: Joi.string().default(DEFAULT_OPTIONS.filename),
 });
 
 export function validateOptions({
diff --git a/website/docs/api/plugins/plugin-sitemap.md b/website/docs/api/plugins/plugin-sitemap.md
index 0d37d2345151..145b62d9e258 100644
--- a/website/docs/api/plugins/plugin-sitemap.md
+++ b/website/docs/api/plugins/plugin-sitemap.md
@@ -40,6 +40,7 @@ Accepted fields:
 | `changefreq` | `string` | `'weekly'` | See [sitemap docs](https://www.sitemaps.org/protocol.html#xmlTagDefinitions) |
 | `priority` | `number` | `0.5` | See [sitemap docs](https://www.sitemaps.org/protocol.html#xmlTagDefinitions) |
 | `ignorePatterns` | `string[]` | `[]` | A list of glob patterns; matching route paths will be filtered from the sitemap. Note that you may need to include the base URL in here. |
+| `filename` | `string` | `sitemap.xml` | The path to the created sitemap file, relative to the output directory. Useful if you have two plugin instances outputting two files. |
 
 </APITable>
 
@@ -70,6 +71,7 @@ const config = {
   changefreq: 'weekly',
   priority: 0.5,
   ignorePatterns: ['/tags/**'],
+  filename: 'sitemap.xml',
 };
 ```