diff --git a/lua/null-ls/builtins/formatting/terragrunt_fmt.lua b/lua/null-ls/builtins/formatting/terragrunt_fmt.lua
new file mode 100644
index 00000000..dbe04855
--- /dev/null
+++ b/lua/null-ls/builtins/formatting/terragrunt_fmt.lua
@@ -0,0 +1,23 @@
+local h = require("null-ls.helpers")
+local methods = require("null-ls.methods")
+
+local FORMATTING = methods.internal.FORMATTING
+
+return h.make_builtin({
+    name = "terragrunt_fmt",
+    meta = {
+        url = "https://terragrunt.gruntwork.io/docs/reference/cli-options/#hclfmt",
+        description = "The terragrunt hclfmt command rewrites `terragrunt` configuration files to a canonical format and style.",
+    },
+    method = FORMATTING,
+    filetypes = { "hcl" },
+    generator_opts = {
+        command = "terragrunt",
+        args = {
+            "hclfmt",
+            "-",
+        },
+        to_stdin = true,
+    },
+    factory = h.formatter_factory,
+})