diff --git a/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.installer.yaml b/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.installer.yaml
new file mode 100644
index 00000000000000..158676b28ac61a
--- /dev/null
+++ b/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.installer.yaml
@@ -0,0 +1,32 @@
+# Created using wingetcreate 1.9.3.0
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.9.0.schema.json
+
+PackageIdentifier: Mozilla.SeaMonkey
+PackageVersion: 2.53.19
+MinimumOSVersion: 10.0.0.0
+InstallerType: nullsoft
+Scope: machine
+InstallModes:
+- interactive
+- silent
+UpgradeBehavior: install
+Protocols:
+- http
+- https
+FileExtensions:
+- htm
+- html
+- url
+Installers:
+- Architecture: x86
+  InstallerUrl: https://archive.seamonkey-project.org/releases/2.53.19/win32/en-US/seamonkey-2.53.19.en-US.win32.installer.exe
+  InstallerSha256: B507F59D5EF019C6B19E0684F19CEC971B3C9C8281C523DE72CFACFE19B37B53
+  AppsAndFeaturesEntries:
+  - DisplayName: SeaMonkey 2.53.18.1 (x86 en-US)
+- Architecture: x64
+  InstallerUrl: https://archive.seamonkey-project.org/releases/2.53.19/win64/en-US/seamonkey-2.53.19.en-US.win64.installer.exe
+  InstallerSha256: 3045CDE8D643F4FEC93A2CCA2139A6E9698FAD5BA5F5A2141C3BE00392E5C542
+  AppsAndFeaturesEntries:
+  - DisplayName: SeaMonkey 2.53.18.1 (x64 en-US)
+ManifestType: installer
+ManifestVersion: 1.9.0
diff --git a/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.locale.en-US.yaml b/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.locale.en-US.yaml
new file mode 100644
index 00000000000000..00d8732196db5c
--- /dev/null
+++ b/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.locale.en-US.yaml
@@ -0,0 +1,26 @@
+# Created using wingetcreate 1.9.3.0
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultLocale.1.9.0.schema.json
+
+PackageIdentifier: Mozilla.SeaMonkey
+PackageVersion: 2.53.19
+PackageLocale: en-US
+Publisher: The SeaMonkey Council
+PublisherUrl: https://www.seamonkey-project.org/
+PublisherSupportUrl: https://www.seamonkey-project.org/community#support
+PrivacyUrl: https://www.seamonkey-project.org/legal/privacy
+Author: The SeaMonkey Council
+PackageName: SeaMonkey
+PackageUrl: https://www.seamonkey-project.org/
+License: MPL-2.0
+LicenseUrl: https://www.seamonkey-project.org/legal/#license
+ShortDescription: The SeaMonkey project is a community effort to develop the SeaMonkey Internet Application Suite.
+Moniker: seamonkey
+Tags:
+- browser
+- cross-platform
+- foss
+- gecko
+- open-source
+- web-browser
+ManifestType: defaultLocale
+ManifestVersion: 1.9.0
diff --git a/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.yaml b/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.yaml
new file mode 100644
index 00000000000000..608ec65659a784
--- /dev/null
+++ b/manifests/m/Mozilla/SeaMonkey/2.53.19/Mozilla.SeaMonkey.yaml
@@ -0,0 +1,8 @@
+# Created using wingetcreate 1.9.3.0
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.9.0.schema.json
+
+PackageIdentifier: Mozilla.SeaMonkey
+PackageVersion: 2.53.19
+DefaultLocale: en-US
+ManifestType: version
+ManifestVersion: 1.9.0