diff --git a/packages/browser-destinations/destinations/mixpanel-web/metadata.json b/packages/browser-destinations/destinations/mixpanel-web/metadata.json
index 47691af8ab9..0ca732927e9 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/metadata.json
+++ b/packages/browser-destinations/destinations/mixpanel-web/metadata.json
@@ -25,6 +25,16 @@
         "default": null,
         "depends_on": null
       },
+      "sourceName": {
+        "label": "Source Name",
+        "description": "This value, if it's not blank, will be sent as segment_source_name to Mixpanel for every event, including events Mixpanel captures automatically.",
+        "type": "string",
+        "required": false,
+        "multiple": false,
+        "choices": null,
+        "default": null,
+        "depends_on": null
+      },
       "api_host": {
         "label": "API Host",
         "description": "The Mixpanel API host to send data to.",
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/__tests__/initialization.test.ts b/packages/browser-destinations/destinations/mixpanel-web/src/__tests__/initialization.test.ts
index 692fc0b7eab..6ecc8a85d5a 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/__tests__/initialization.test.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/__tests__/initialization.test.ts
@@ -51,6 +51,7 @@ describe('Mixpanel Web initialization', () => {
       track: jest.fn(),
       track_pageview: jest.fn(),
       identify: jest.fn(),
+      register: jest.fn(),
       alias: jest.fn(),
       get_group: jest.fn(),
       set_group: jest.fn(),
@@ -99,4 +100,136 @@ describe('Mixpanel Web initialization', () => {
     expect(resolvedInstance).toBe(mockMixpanelInstance)
     expect(resolvedInstance).not.toBe(mockSnippetMixpanel)
   })
+
+  test('registers segment_source_name as a super property when sourceName is set', async () => {
+    const mockMixpanelInstance: Mixpanel = {
+      init: jest.fn(),
+      track: jest.fn(),
+      track_pageview: jest.fn(),
+      identify: jest.fn(),
+      register: jest.fn(),
+      alias: jest.fn(),
+      get_group: jest.fn(),
+      set_group: jest.fn(),
+      people: {
+        set: jest.fn(),
+        set_once: jest.fn(),
+        increment: jest.fn()
+      }
+    }
+
+    const mockSnippetMixpanel: Partial<Mixpanel> = {
+      init: jest.fn().mockImplementation((_token, config, _name) => {
+        setTimeout(() => {
+          if (config?.loaded) {
+            config.loaded(mockMixpanelInstance)
+          }
+        }, 10)
+      })
+    }
+
+    jest.spyOn(initScriptModule, 'initScript').mockImplementation(async () => {
+      ;(window as any).mixpanel = mockSnippetMixpanel
+    })
+
+    const [event] = await MixpanelDestination({
+      ...baseSettings,
+      sourceName: 'My Website Source',
+      subscriptions
+    })
+
+    await event.load(Context.system(), {} as Analytics)
+
+    expect(mockMixpanelInstance.register).toHaveBeenCalledWith({
+      segment_source_name: 'My Website Source'
+    })
+
+    // sourceName is a Segment side setting and is not a valid Mixpanel config option,
+    // so it must not be forwarded to mixpanel.init
+    const [, config] = (mockSnippetMixpanel.init as jest.Mock).mock.calls[0]
+    expect(config).not.toHaveProperty('sourceName')
+  })
+
+  test('does not register a super property when sourceName is not set', async () => {
+    const mockMixpanelInstance: Mixpanel = {
+      init: jest.fn(),
+      track: jest.fn(),
+      track_pageview: jest.fn(),
+      identify: jest.fn(),
+      register: jest.fn(),
+      alias: jest.fn(),
+      get_group: jest.fn(),
+      set_group: jest.fn(),
+      people: {
+        set: jest.fn(),
+        set_once: jest.fn(),
+        increment: jest.fn()
+      }
+    }
+
+    const mockSnippetMixpanel: Partial<Mixpanel> = {
+      init: jest.fn().mockImplementation((_token, config, _name) => {
+        setTimeout(() => {
+          if (config?.loaded) {
+            config.loaded(mockMixpanelInstance)
+          }
+        }, 10)
+      })
+    }
+
+    jest.spyOn(initScriptModule, 'initScript').mockImplementation(async () => {
+      ;(window as any).mixpanel = mockSnippetMixpanel
+    })
+
+    const [event] = await MixpanelDestination({
+      ...baseSettings,
+      subscriptions
+    })
+
+    await event.load(Context.system(), {} as Analytics)
+
+    expect(mockMixpanelInstance.register).not.toHaveBeenCalled()
+  })
+
+  test('does not register a super property when sourceName is only whitespace', async () => {
+    const mockMixpanelInstance: Mixpanel = {
+      init: jest.fn(),
+      track: jest.fn(),
+      track_pageview: jest.fn(),
+      identify: jest.fn(),
+      register: jest.fn(),
+      alias: jest.fn(),
+      get_group: jest.fn(),
+      set_group: jest.fn(),
+      people: {
+        set: jest.fn(),
+        set_once: jest.fn(),
+        increment: jest.fn()
+      }
+    }
+
+    const mockSnippetMixpanel: Partial<Mixpanel> = {
+      init: jest.fn().mockImplementation((_token, config, _name) => {
+        setTimeout(() => {
+          if (config?.loaded) {
+            config.loaded(mockMixpanelInstance)
+          }
+        }, 10)
+      })
+    }
+
+    jest.spyOn(initScriptModule, 'initScript').mockImplementation(async () => {
+      ;(window as any).mixpanel = mockSnippetMixpanel
+    })
+
+    const [event] = await MixpanelDestination({
+      ...baseSettings,
+      sourceName: '   ',
+      subscriptions
+    })
+
+    await event.load(Context.system(), {} as Analytics)
+
+    expect(mockMixpanelInstance.register).not.toHaveBeenCalled()
+  })
 })
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/alias/__tests__/index.test.ts b/packages/browser-destinations/destinations/mixpanel-web/src/alias/__tests__/index.test.ts
index 38003558f70..8d433604f2f 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/alias/__tests__/index.test.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/alias/__tests__/index.test.ts
@@ -48,6 +48,7 @@ describe('Mixpanel.alias', () => {
         track_pageview: jest.fn(),
         track: jest.fn(),
         identify: jest.fn(),
+        register: jest.fn(),
         alias: jest.fn(),
         get_group: jest.fn().mockReturnValue(mockGroup),
         set_group: jest.fn(),
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/generated-types.ts b/packages/browser-destinations/destinations/mixpanel-web/src/generated-types.ts
index a07045e4d00..5401e62cb6f 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/generated-types.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/generated-types.ts
@@ -9,6 +9,10 @@ export interface Settings {
    * The name for the new mixpanel instance that you want created.
    */
   name?: string
+  /**
+   * This value, if it's not blank, will be sent as segment_source_name to Mixpanel for every event, including events Mixpanel captures automatically.
+   */
+  sourceName?: string
   /**
    * The Mixpanel API host to send data to.
    */
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/group/__tests__/index.test.ts b/packages/browser-destinations/destinations/mixpanel-web/src/group/__tests__/index.test.ts
index 11d266a81ec..6d4a1e2b3ec 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/group/__tests__/index.test.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/group/__tests__/index.test.ts
@@ -48,6 +48,7 @@ describe('Mixpanel.group', () => {
         track_pageview: jest.fn(),
         track: jest.fn(),
         identify: jest.fn(),
+        register: jest.fn(),
         alias: jest.fn(),
         get_group: jest.fn().mockReturnValue(mockGroup),
         set_group: jest.fn(),
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/identify/__tests__/index.test.ts b/packages/browser-destinations/destinations/mixpanel-web/src/identify/__tests__/index.test.ts
index 16705110300..ff928a55517 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/identify/__tests__/index.test.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/identify/__tests__/index.test.ts
@@ -48,6 +48,7 @@ describe('Mixpanel.identify', () => {
         track_pageview: jest.fn(),
         track: jest.fn(),
         identify: jest.fn(),
+        register: jest.fn(),
         alias: jest.fn(),
         get_group: jest.fn().mockReturnValue(mockGroup),
         set_group: jest.fn(),
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/index.ts b/packages/browser-destinations/destinations/mixpanel-web/src/index.ts
index 49d82e33a38..e43b4789dfe 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/index.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/index.ts
@@ -29,6 +29,7 @@ export const destination: BrowserDestinationDefinition<Settings, Mixpanel> = {
     const {
       projectToken,
       name,
+      sourceName,
       autocapture,
       pageview,
       click,
@@ -88,7 +89,14 @@ export const destination: BrowserDestinationDefinition<Settings, Mixpanel> = {
     }
 
     return new Promise<Mixpanel>((resolve) => {
-      config.loaded = (mp) => resolve(mp)
+      config.loaded = (mp) => {
+        const trimmedSourceName = sourceName?.trim()
+        if (trimmedSourceName && typeof mp?.register === 'function') {
+          // Registered as a super property so it is attached to every event
+          mp.register({ segment_source_name: trimmedSourceName })
+        }
+        resolve(mp)
+      }
 
       if (name) {
         window.mixpanel.init(projectToken, config, name)
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/setting-fields.ts b/packages/browser-destinations/destinations/mixpanel-web/src/setting-fields.ts
index eb47932e0c2..438eec8019b 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/setting-fields.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/setting-fields.ts
@@ -13,6 +13,12 @@ export const settingFields: Record<string, GlobalSetting> = {
         description: 'The name for the new mixpanel instance that you want created.',
         type: 'string'
     },
+    sourceName: {
+        label: 'Source Name',
+        description:
+        "This value, if it's not blank, will be sent as segment_source_name to Mixpanel for every event, including events Mixpanel captures automatically.",
+        type: 'string'
+    },
     api_host: {
         description: 'The Mixpanel API host to send data to.',
         label: 'API Host',
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/track/__tests__/index.test.ts b/packages/browser-destinations/destinations/mixpanel-web/src/track/__tests__/index.test.ts
index 1ea2e9cbb84..129260a60d1 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/track/__tests__/index.test.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/track/__tests__/index.test.ts
@@ -48,6 +48,7 @@ describe('Mixpanel.track', () => {
         track_pageview: jest.fn(),
         track: jest.fn(),
         identify: jest.fn(),
+        register: jest.fn(),
         alias: jest.fn(),
         get_group: jest.fn().mockReturnValue(mockGroup),
         set_group: jest.fn(),
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/trackPageView/__tests__/index.test.ts b/packages/browser-destinations/destinations/mixpanel-web/src/trackPageView/__tests__/index.test.ts
index 54b53e9ea03..59f8920ad9b 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/trackPageView/__tests__/index.test.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/trackPageView/__tests__/index.test.ts
@@ -48,6 +48,7 @@ describe('Mixpanel.trackPageView', () => {
         track_pageview: jest.fn(),
         track: jest.fn(),
         identify: jest.fn(),
+        register: jest.fn(),
         alias: jest.fn(),
         get_group: jest.fn().mockReturnValue(mockGroup),
         set_group: jest.fn(),
diff --git a/packages/browser-destinations/destinations/mixpanel-web/src/types.ts b/packages/browser-destinations/destinations/mixpanel-web/src/types.ts
index 482585810e5..8ec5ffd351b 100644
--- a/packages/browser-destinations/destinations/mixpanel-web/src/types.ts
+++ b/packages/browser-destinations/destinations/mixpanel-web/src/types.ts
@@ -25,6 +25,8 @@ export interface Mixpanel {
 
   identify(unique_id?: string): void
 
+  register(properties: { [k: string]: unknown }): void
+
   alias(alias: string, original?: string): void
 
   get_group(group_key: string, group_id: string): Group