diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 9a2ee5931..463671241 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -247,6 +247,9 @@
 
 /modules/programs/starship.nix                        @marsam
 
+/modules/programs/swaylock.nix                        @rcerc
+/tests/modules/programs/swaylock                      @rcerc
+
 /modules/programs/tealdeer.nix                        @marsam
 
 /modules/programs/terminator.nix                      @chisui
diff --git a/modules/lib/maintainers.nix b/modules/lib/maintainers.nix
index a485d6cdd..17fc44076 100644
--- a/modules/lib/maintainers.nix
+++ b/modules/lib/maintainers.nix
@@ -271,4 +271,14 @@
     github = "rszamszur";
     githubId = 10353018;
   };
+  rcerc = {
+    name = "rcerc";
+    email = "88944439+rcerc@users.noreply.github.com";
+    github = "rcerc";
+    githubId = 88944439;
+    keys = [{
+      longkeyid = "ed25519/0x3F98EC7EC2B87ED1";
+      fingerprint = "D5D6 FD1F 0D9A 3284 FB9B  C26D 3F98 EC7E C2B8 7ED1";
+    }];
+  };
 }
diff --git a/modules/modules.nix b/modules/modules.nix
index 22eedc5a9..99b1b756a 100644
--- a/modules/modules.nix
+++ b/modules/modules.nix
@@ -150,6 +150,7 @@ let
     ./programs/sqls.nix
     ./programs/ssh.nix
     ./programs/starship.nix
+    ./programs/swaylock.nix
     ./programs/taskwarrior.nix
     ./programs/tealdeer.nix
     ./programs/terminator.nix
diff --git a/modules/programs/swaylock.nix b/modules/programs/swaylock.nix
new file mode 100644
index 000000000..187ff9d61
--- /dev/null
+++ b/modules/programs/swaylock.nix
@@ -0,0 +1,32 @@
+{ config, lib, ... }:
+
+let cfg = config.programs.swaylock;
+in {
+  meta.maintainers = [ lib.hm.maintainers.rcerc ];
+
+  options.programs.swaylock.settings = lib.mkOption {
+    type = with lib.types; attrsOf (oneOf [ bool float int str ]);
+    default = { };
+    description = ''
+      Default arguments to <command>swaylock</command>. An empty set
+      disables configuration generation.
+    '';
+    example = {
+      color = "808080";
+      font-size = 24;
+      indicator-idle-visible = false;
+      indicator-radius = 100;
+      line-color = "ffffff";
+      show-failed-attempts = true;
+    };
+  };
+
+  config.xdg.configFile."swaylock/config" = lib.mkIf (cfg.settings != { }) {
+    text = lib.concatStrings (lib.mapAttrsToList (n: v:
+      if v == false then
+        ""
+      else
+        (if v == true then n else n + "=" + builtins.toString v) + "\n")
+      cfg.settings);
+  };
+}
diff --git a/tests/default.nix b/tests/default.nix
index 0af284ddc..ada8c40f2 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -130,6 +130,7 @@ import nmt {
     ./modules/programs/rbw
     ./modules/programs/rofi
     ./modules/programs/rofi-pass
+    ./modules/programs/swaylock
     ./modules/programs/terminator
     ./modules/programs/waybar
     ./modules/programs/xmobar
diff --git a/tests/modules/programs/swaylock/config b/tests/modules/programs/swaylock/config
new file mode 100644
index 000000000..fdda03ea0
--- /dev/null
+++ b/tests/modules/programs/swaylock/config
@@ -0,0 +1,5 @@
+color=808080
+font-size=24
+indicator-radius=100
+line-color=ffffff
+show-failed-attempts
diff --git a/tests/modules/programs/swaylock/default.nix b/tests/modules/programs/swaylock/default.nix
new file mode 100644
index 000000000..a8a33fd69
--- /dev/null
+++ b/tests/modules/programs/swaylock/default.nix
@@ -0,0 +1,4 @@
+{
+  swaylock-disabled = import ./disabled.nix;
+  swaylock-settings = import ./settings.nix;
+}
diff --git a/tests/modules/programs/swaylock/disabled.nix b/tests/modules/programs/swaylock/disabled.nix
new file mode 100644
index 000000000..94dd14dc7
--- /dev/null
+++ b/tests/modules/programs/swaylock/disabled.nix
@@ -0,0 +1,7 @@
+{ ... }: {
+  programs.swaylock.settings = { };
+
+  nmt.script = ''
+    assertPathNotExists home-files/.config/swaylock/config
+  '';
+}
diff --git a/tests/modules/programs/swaylock/settings.nix b/tests/modules/programs/swaylock/settings.nix
new file mode 100644
index 000000000..9ad46ba5a
--- /dev/null
+++ b/tests/modules/programs/swaylock/settings.nix
@@ -0,0 +1,16 @@
+{ ... }: {
+  programs.swaylock.settings = {
+    color = "808080";
+    font-size = 24;
+    indicator-idle-visible = false; # Test that this does nothing
+    indicator-radius = 100;
+    line-color = "ffffff";
+    show-failed-attempts = true;
+  };
+
+  nmt.script = let homeConfig = "home-files/.config/swaylock/config";
+  in ''
+    assertFileExists ${homeConfig}
+    assertFileContent ${homeConfig} ${./config}
+  '';
+}