diff --git a/changelogs/fragments/56033-win_iis_webapplication-add-authentication-options.yml b/changelogs/fragments/56033-win_iis_webapplication-add-authentication-options.yml
new file mode 100644
index 00000000000..410e1ad9851
--- /dev/null
+++ b/changelogs/fragments/56033-win_iis_webapplication-add-authentication-options.yml
@@ -0,0 +1,2 @@
+minor_changes:
+  - "win_iis_webapplication - add new options ``connect_as``, ``username``, ``password``."
diff --git a/lib/ansible/modules/windows/win_iis_webapplication.ps1 b/lib/ansible/modules/windows/win_iis_webapplication.ps1
index 587de19cb69..92fdbbd9e50 100644
--- a/lib/ansible/modules/windows/win_iis_webapplication.ps1
+++ b/lib/ansible/modules/windows/win_iis_webapplication.ps1
@@ -13,6 +13,9 @@ $site = Get-AnsibleParam -obj $params -name "site" -type "str" -failifempty $tru
 $state = Get-AnsibleParam -obj $params -name "state" -type "str" -default "present" -validateset "absent","present"
 $physical_path = Get-AnsibleParam -obj $params -name "physical_path" -type "str" -aliases "path"
 $application_pool = Get-AnsibleParam -obj $params -name "application_pool" -type "str"
+$connect_as = Get-AnsibleParam -obj $params -name 'connect_as' -type 'str' -validateset 'specific_user', 'pass_through'
+$username = Get-AnsibleParam -obj $params -name "username" -type "str" -failifempty ($connect_as -eq 'specific_user')
+$password = Get-AnsibleParam -obj $params -name "password" -type "str" -failifempty ($connect_as -eq 'specific_user')
 
 $result = @{
   application_pool = $application_pool
@@ -90,6 +93,29 @@ try {
         $result.changed = $true
       }
     }
+
+    # Change username and password if needed
+    $app_user = Get-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'userName'
+    $app_pass = Get-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'password'
+    if ($connect_as -eq 'pass_through') {
+      if ($app_user -ne '') {
+        Clear-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'userName' -WhatIf:$check_mode
+        $result.changed = $true
+      }
+      if ($app_pass -ne '') {
+        Clear-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'password' -WhatIf:$check_mode
+        $result.changed = $true
+      }
+    } elseif ($connect_as -eq 'specific_user') {
+      if ($app_user -ne $username) {
+        Set-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'userName' -Value $username -WhatIf:$check_mode
+        $result.changed = $true
+      }
+      if ($app_pass -ne $password) {
+        Set-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'password' -Value $password -WhatIf:$check_mode
+        $result.changed = $true
+      }
+    }
   }
 } catch {
   Fail-Json $result $_.Exception.Message
@@ -98,6 +124,13 @@ try {
 # When in check-mode or on removal, this may fail
 $application = Get-WebApplication -Site $site -Name $name
 if ($application) {
+  $app_user = Get-ItemProperty -Path "IIS:\Sites\$($site)\$($name)" -Name 'userName'
+  if ($app_user -eq '') {
+    $result.connect_as = 'pass_through'
+  } else {
+    $result.connect_as = 'specific_user'
+  }
+
   $result.physical_path = $application.PhysicalPath
   $result.application_pool = $application.ApplicationPool
 }
diff --git a/lib/ansible/modules/windows/win_iis_webapplication.py b/lib/ansible/modules/windows/win_iis_webapplication.py
index 3e293d989b2..2fad6a48072 100644
--- a/lib/ansible/modules/windows/win_iis_webapplication.py
+++ b/lib/ansible/modules/windows/win_iis_webapplication.py
@@ -42,6 +42,26 @@ options:
     - The application pool in which the new site executes.
     - If not specified, the application pool of the current website will be used.
     type: str
+  connect_as:
+    description:
+    - The type of authentication to use for this application. Either C(pass_through) or C(specific_user)
+    - If C(pass_through), IIS will use the identity of the user or application pool identity to access the file system or network.
+    - If C(specific_user), IIS will use the credentials provided in I(username) and I(password) to access the file system or network.
+    type: str
+    choices: [pass_through, specific_user]
+    version_added: '2.10'
+  username:
+    description:
+    - Specifies the user name of an account that can access configuration files and content for this application.
+    - Required when I(connect_as) is set to C(specific_user).
+    type: str
+    version_added: '2.10'
+  password:
+    description:
+    - The password associated with I(username).
+    - Required when I(connect_as) is set to C(specific_user).
+    type: str
+    version_added: '2.10'
 seealso:
 - module: win_iis_virtualdirectory
 - module: win_iis_webapppool
@@ -71,4 +91,9 @@ physical_path:
     returned: success
     type: str
     sample: C:\apps\acme\api
+connect_as:
+    description: How IIS will try to authenticate to the physical_path.
+    returned: when the application exists
+    type: str
+    sample: specific_user
 '''
diff --git a/test/integration/targets/win_iis_webapplication/aliases b/test/integration/targets/win_iis_webapplication/aliases
new file mode 100644
index 00000000000..3cf5b97e805
--- /dev/null
+++ b/test/integration/targets/win_iis_webapplication/aliases
@@ -0,0 +1 @@
+shippable/windows/group3
diff --git a/test/integration/targets/win_iis_webapplication/defaults/main.yml b/test/integration/targets/win_iis_webapplication/defaults/main.yml
new file mode 100644
index 00000000000..e5a582dee14
--- /dev/null
+++ b/test/integration/targets/win_iis_webapplication/defaults/main.yml
@@ -0,0 +1,11 @@
+---
+
+test_app_name: TestApp
+
+test_site_name: 'Test Site'
+
+test_user: testuser
+test_password: testpass
+
+test_physical_path: "{{ remote_tmp_dir }}"
+test_apppool: 'testapppool'
diff --git a/test/integration/targets/win_iis_webapplication/meta/main.yml b/test/integration/targets/win_iis_webapplication/meta/main.yml
new file mode 100644
index 00000000000..e3dd5fb100d
--- /dev/null
+++ b/test/integration/targets/win_iis_webapplication/meta/main.yml
@@ -0,0 +1,3 @@
+---
+dependencies:
+- setup_remote_tmp_dir
diff --git a/test/integration/targets/win_iis_webapplication/tasks/main.yml b/test/integration/targets/win_iis_webapplication/tasks/main.yml
new file mode 100644
index 00000000000..83614f17f30
--- /dev/null
+++ b/test/integration/targets/win_iis_webapplication/tasks/main.yml
@@ -0,0 +1,70 @@
+---
+# Cannot use win_feature to install IIS on Server 2008.
+# Run a brief check and skip hosts that don't support
+# that operation
+
+# Run on Server 2012 and higher
+- block:
+  - name: ensure IIS features are installed
+    win_feature:
+      name: Web-Server
+      state: present
+      include_management_tools: True
+    register: feature_install
+
+  - name: reboot after feature install
+    win_reboot:
+    when: feature_install.reboot_required
+
+    # may be possible that copy corrupts the file
+  - name: Get iis configuration checksum
+    win_stat:
+      path: '{{ ansible_env.SystemRoot }}\System32\inetsrv\config\applicationHost.config'
+      checksum_algorithm: sha1
+    register: stat_result
+
+  - name: take a copy of the original iis configuration
+    win_copy:
+      src: '{{ ansible_env.SystemRoot }}\System32\inetsrv\config\applicationHost.config'
+      dest: '{{ ansible_env.TEMP }}\applicationHost.config'
+      remote_src: yes
+    register: copy_result
+
+  - assert:
+      that:
+        - "stat_result.stat.checksum == copy_result.checksum"
+
+  # Tests
+  - name: run tests on hosts that support it
+    include_tasks: tests.yml
+
+  always:
+  # Cleanup
+  - name: remove test application
+    win_iis_webapplication:
+      state: absent
+      site: "{{ test_site_name }}"
+      name: "{{ test_app_name }}"
+
+  - name: remove test application pool
+    win_iis_webapppool:
+      name: "{{ test_apppool }}"
+      state: absent
+
+  - name: remove test site
+    win_iis_website:
+      name: "{{ test_site_name }}"
+      state: absent
+
+  - name: restore iis configuration
+    win_copy:
+      src: '{{ ansible_env.TEMP }}\applicationHost.config'
+      dest: '{{ ansible_env.SystemRoot }}\System32\inetsrv\config\applicationHost.config'
+      remote_src: yes
+    register: copy_result
+
+  - assert:
+      that:
+        - "stat_result.stat.checksum == copy_result.checksum"
+
+  when: ansible_distribution_version is version('6.2','ge')
diff --git a/test/integration/targets/win_iis_webapplication/tasks/tests.yml b/test/integration/targets/win_iis_webapplication/tasks/tests.yml
new file mode 100644
index 00000000000..135cccfeca9
--- /dev/null
+++ b/test/integration/targets/win_iis_webapplication/tasks/tests.yml
@@ -0,0 +1,91 @@
+---
+- name: test site exists, but stopped in case of duplicate web binding
+  win_iis_website:
+    name: "{{ test_site_name }}"
+    state: stopped
+    physical_path: 'C:\inetpub\wwwroot'
+
+- name: test app is absent (baseline)
+  win_iis_webapplication:
+    state: absent
+    site: "{{ test_site_name }}"
+    name: "{{ test_app_name }}"
+
+- name: create test app
+  win_iis_webapplication:
+    state: present
+    site: "{{ test_site_name }}"
+    name: "{{ test_app_name }}"
+    physical_path: "{{ test_physical_path }}"
+  register: result
+
+- assert:
+    that:
+    - 'result.changed == true'
+    - 'result.physical_path == test_physical_path'
+
+- name: create test app (idempotent)
+  win_iis_webapplication:
+    state: present
+    site: "{{ test_site_name }}"
+    name: "{{ test_app_name }}"
+    physical_path: "{{ test_physical_path }}"
+  register: result
+
+- assert:
+    that:
+    - 'result.changed == false'
+    - 'result.physical_path == test_physical_path'
+
+- name: set test app credentials
+  win_iis_webapplication:
+    state: present
+    site: "{{ test_site_name }}"
+    name: "{{ test_app_name }}"
+    connect_as: specific_user
+    username: "{{ test_user }}"
+    password: "{{ test_password }}"
+  register: result
+
+- assert:
+    that:
+    - 'result.changed == true'
+    - 'result.physical_path == test_physical_path'
+    - "result.connect_as == 'specific_user'"
+
+- name: set test app credentials (idempotent)
+  win_iis_webapplication:
+    state: present
+    site: "{{ test_site_name }}"
+    name: "{{ test_app_name }}"
+    connect_as: specific_user
+    username: "{{ test_user }}"
+    password: "{{ test_password }}"
+  register: result
+
+- assert:
+    that:
+    - 'result.changed == false'
+    - 'result.physical_path == test_physical_path'
+    - "result.connect_as == 'specific_user'"
+
+- name: create new test application pool
+  win_iis_webapppool:
+    name: "{{ test_apppool }}"
+    state: present
+
+- name: change app pool and use pass through authentication
+  win_iis_webapplication:
+    state: present
+    site: "{{ test_site_name }}"
+    name: "{{ test_app_name }}"
+    connect_as: pass_through
+    application_pool: "{{ test_apppool }}"
+  register: result
+
+- assert:
+    that:
+    - 'result.changed == true'
+    - 'result.physical_path == test_physical_path'
+    - "result.connect_as == 'pass_through'"
+    - "result.application_pool == test_apppool"