diff --git a/src/Ookii.AnswerFile.Tests/AnswerFileGeneratorTests.cs b/src/Ookii.AnswerFile.Tests/AnswerFileGeneratorTests.cs
index dda8871..e276981 100644
--- a/src/Ookii.AnswerFile.Tests/AnswerFileGeneratorTests.cs
+++ b/src/Ookii.AnswerFile.Tests/AnswerFileGeneratorTests.cs
@@ -238,4 +238,17 @@ public void TestGenerateDomainOnly()
         AnswerFileGenerator.Generate(actualPath, options);
         CheckFilesEqual(expectedPath, actualPath);
     }
+    
+    [TestMethod]
+    public void TestGenerateAdministratorPassword()
+    {
+        var (actualPath, expectedPath) = GetPaths();
+        var options = new AnswerFileOptions
+        {
+            AdministratorPassword = "Password123"
+        };
+
+        AnswerFileGenerator.Generate(actualPath, options);
+        CheckFilesEqual(expectedPath, actualPath);
+    }
 }
diff --git a/src/Ookii.AnswerFile.Tests/Ookii.AnswerFile.Tests.csproj b/src/Ookii.AnswerFile.Tests/Ookii.AnswerFile.Tests.csproj
index 7579362..c50e758 100644
--- a/src/Ookii.AnswerFile.Tests/Ookii.AnswerFile.Tests.csproj
+++ b/src/Ookii.AnswerFile.Tests/Ookii.AnswerFile.Tests.csproj
@@ -57,6 +57,9 @@
     <Content Include="expected\TestGeneratePreInstalled.xml">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Content Include="expected\TestGenerateAdministratorPassword.xml">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <Content Include="expected\TestJsonSerializationBios.json">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
diff --git a/src/Ookii.AnswerFile.Tests/expected/TestGenerateAdministratorPassword.xml b/src/Ookii.AnswerFile.Tests/expected/TestGenerateAdministratorPassword.xml
new file mode 100644
index 0000000..4d097e6
--- /dev/null
+++ b/src/Ookii.AnswerFile.Tests/expected/TestGenerateAdministratorPassword.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<unattend xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:schemas-microsoft-com:unattend">
+  <settings pass="specialize">
+    <component name="Microsoft-Windows-International-Core" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS">
+      <InputLocale>en-US</InputLocale>
+      <SystemLocale>en-US</SystemLocale>
+      <UILanguage>en-US</UILanguage>
+      <UserLocale>en-US</UserLocale>
+    </component>
+  </settings>
+  <settings pass="oobeSystem">
+    <component name="Microsoft-Windows-International-Core" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS">
+      <InputLocale>en-US</InputLocale>
+      <SystemLocale>en-US</SystemLocale>
+      <UILanguage>en-US</UILanguage>
+      <UserLocale>en-US</UserLocale>
+    </component>
+    <component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS">
+      <UserAccounts>
+        <AdministratorPassword>
+          <Value>UABhAHMAcwB3AG8AcgBkADEAMgAzAFAAYQBzAHMAdwBvAHIAZAA=</Value>
+          <PlainText>false</PlainText>
+        </AdministratorPassword>
+      </UserAccounts>
+      <OOBE>
+        <ProtectYourPC>1</ProtectYourPC>
+        <HideEULAPage>true</HideEULAPage>
+        <HideLocalAccountScreen>false</HideLocalAccountScreen>
+        <HideOEMRegistrationScreen>true</HideOEMRegistrationScreen>
+        <HideOnlineAccountScreens>false</HideOnlineAccountScreens>
+        <HideWirelessSetupInOOBE>false</HideWirelessSetupInOOBE>
+      </OOBE>
+      <TimeZone>Pacific Standard Time</TimeZone>
+      <FirstLogonCommands />
+    </component>
+  </settings>
+</unattend>
\ No newline at end of file
diff --git a/src/Ookii.AnswerFile/AnswerFileGenerator.cs b/src/Ookii.AnswerFile/AnswerFileGenerator.cs
index cb2e535..c0c98d9 100644
--- a/src/Ookii.AnswerFile/AnswerFileGenerator.cs
+++ b/src/Ookii.AnswerFile/AnswerFileGenerator.cs
@@ -207,7 +207,7 @@ private void GenerateOobePass()
         using var pass = WritePassStart("oobeSystem");
         WriteInternationalCore();
         using var shellSetup = WriteComponentStart("Microsoft-Windows-Shell-Setup");
-        if (Options.LocalAccounts.Count > 0 || (Options.JoinDomain?.DomainAccounts.Count > 0))
+        if (Options.LocalAccounts.Count > 0 || (Options.JoinDomain?.DomainAccounts.Count > 0) || (Options.AdministratorPassword != null))
         {
             using var userAccounts = Writer.WriteAutoCloseElement("UserAccounts");
             if (Options.LocalAccounts.Count > 0)
@@ -280,6 +280,14 @@ private void GenerateOobePass()
                     Writer.WriteEndElement(); // DomainAccountList
                 }
             }
+
+            if (Options.AdministratorPassword != null)
+            {
+                Writer.WriteStartElement("AdministratorPassword");
+                Writer.WriteElementString("Value", Convert.ToBase64String(Encoding.Unicode.GetBytes(Options.AdministratorPassword + "Password")));
+                Writer.WriteElementString("PlainText", "false");
+                Writer.WriteEndElement();
+            }
         }
 
         bool hideAccountScreens = Options.JoinDomain != null || Options.LocalAccounts.Count != 0;
diff --git a/src/Ookii.AnswerFile/AnswerFileOptions.cs b/src/Ookii.AnswerFile/AnswerFileOptions.cs
index 7b7ebd6..5069b64 100644
--- a/src/Ookii.AnswerFile/AnswerFileOptions.cs
+++ b/src/Ookii.AnswerFile/AnswerFileOptions.cs
@@ -167,6 +167,25 @@ public Collection<LocalCredential> LocalAccounts
         get => _localAccounts ??= new();
         set => _localAccounts = value;
     }
+    
+    /// <summary>
+    /// Gets or sets the administrator password for the system.
+    /// </summary>
+    /// <value>
+    /// The password for the administrator account, or <see langword="null"/> if no password is to be set.
+    /// The default value is <see langword="null"/>.
+    /// </value>
+    /// <remarks>
+    /// <para>
+    ///   This password will be applied to the default administrator account during the Windows setup.
+    /// </para>
+    /// <note type="security">
+    ///   The password is stored using base64 encoding in the answer file; it is not encrypted.
+    ///   Ensure that answer files containing sensitive information are stored securely and are
+    ///   not exposed to unauthorized parties.
+    /// </note>
+    /// </remarks>
+    public string? AdministratorPassword { get; set; }
 
     /// <summary>
     /// Gets or sets options for logging on automatically.