diff --git a/README.md b/README.md
index 15e54c0c..0278f250 100644
--- a/README.md
+++ b/README.md
@@ -104,7 +104,7 @@ mdsf init
 
 <!-- START_SECTION:supported-languages -->
 
-`mdsf` currently supports 140 tools.
+`mdsf` currently supports 141 tools.
 
 | Formatter          | Description                                                                                                            |
 | ------------------ | ---------------------------------------------------------------------------------------------------------------------- |
@@ -172,6 +172,7 @@ mdsf init
 | goimports-reviser  | [/~https://github.com/incu6us/goimports-reviser](/~https://github.com/incu6us/goimports-reviser)                           |
 | golines            | [/~https://github.com/segmentio/golines](/~https://github.com/segmentio/golines)                                           |
 | google-java-format | [/~https://github.com/google/google-java-format](/~https://github.com/google/google-java-format)                           |
+| grain_format       | [https://grain-lang.org](https://grain-lang.org)                                                                       |
 | haml-lint          | [/~https://github.com/sds/haml-lint](/~https://github.com/sds/haml-lint)                                                   |
 | hindent            | [https://hackage.haskell.org/package/hindent](https://hackage.haskell.org/package/hindent)                             |
 | htmlbeautifier     | [/~https://github.com/threedaymonk/htmlbeautifier](/~https://github.com/threedaymonk/htmlbeautifier)                       |
diff --git a/mdsf.json b/mdsf.json
index 6d51870b..3705b3b4 100644
--- a/mdsf.json
+++ b/mdsf.json
@@ -14,11 +14,13 @@
     "elixir": "mix_format",
     "elm": "elm-format",
     "erlang": [["erlfmt", "efmt"]],
+
     "gleam": "gleam_format",
     "go": [
       ["gci", "goimports-reviser", "goimports"],
       ["gofumpt", "gofmt", "crlfmt"]
     ],
+    "grain": "grain_format",
     "haskell": [["fourmolu", "ormolu", "hindent", "stylish-haskell"]],
     "html": [["prettier", "djlint"]],
     "java": [["google-java-format", "clang-format"]],
diff --git a/schemas/v0.1.2/mdsf.schema.json b/schemas/v0.1.2/mdsf.schema.json
index fad6cd02..65bc0a5c 100644
--- a/schemas/v0.1.2/mdsf.schema.json
+++ b/schemas/v0.1.2/mdsf.schema.json
@@ -369,6 +369,11 @@
           "type": "string",
           "enum": ["google-java-format"]
         },
+        {
+          "description": "https://grain-lang.org",
+          "type": "string",
+          "enum": ["grain_format"]
+        },
         {
           "description": "/~https://github.com/sds/haml-lint",
           "type": "string",
diff --git a/src/formatters/grain.rs b/src/formatters/grain.rs
new file mode 100644
index 00000000..94ab1143
--- /dev/null
+++ b/src/formatters/grain.rs
@@ -0,0 +1,11 @@
+use super::execute_command;
+use crate::error::MdsfError;
+
+#[inline]
+pub fn run_format(file_path: &std::path::Path) -> Result<(bool, Option<String>), MdsfError> {
+    let mut cmd = std::process::Command::new("grain");
+
+    cmd.arg("format").arg(file_path).arg("-o").arg(file_path);
+
+    execute_command(&mut cmd, file_path)
+}
diff --git a/src/formatters/mod.rs b/src/formatters/mod.rs
index f22249f0..c85e3ca6 100644
--- a/src/formatters/mod.rs
+++ b/src/formatters/mod.rs
@@ -73,6 +73,7 @@ mod goimports;
 mod goimports_reviser;
 mod golines;
 mod google_java_format;
+mod grain;
 mod haml_lint;
 mod hindent;
 mod htmlbeautifier;
@@ -523,6 +524,10 @@ pub enum Tooling {
     #[serde(rename = "google-java-format")]
     GoogleJavaFormat,
 
+    #[doc = "https://grain-lang.org"]
+    #[serde(rename = "grain_format")]
+    GrainFormat,
+
     #[doc = "/~https://github.com/sds/haml-lint"]
     #[serde(rename = "haml-lint")]
     HamlLint,
@@ -901,6 +906,7 @@ impl Tooling {
             Self::GoImportsReviser => goimports_reviser::run(snippet_path),
             Self::GoLines => golines::run(snippet_path),
             Self::GoogleJavaFormat => google_java_format::run(snippet_path),
+            Self::GrainFormat => grain::run_format(snippet_path),
             Self::HIndent => hindent::run(snippet_path),
             Self::HamlLint => haml_lint::run(snippet_path),
             Self::Htmlbeautifier => htmlbeautifier::run(snippet_path),
@@ -1050,6 +1056,7 @@ impl core::fmt::Display for Tooling {
             Self::GoImportsReviser => write!(f, "goimports-reviser"),
             Self::GoLines => write!(f, "golines"),
             Self::GoogleJavaFormat => write!(f, "google-java-format"),
+            Self::GrainFormat => write!(f, "grain_format"),
             Self::HIndent => write!(f, "hundent"),
             Self::HamlLint => write!(f, "haml-lint"),
             Self::Htmlbeautifier => write!(f, "htmlbeautifier"),
diff --git a/tests/grain.md b/tests/grain.md
new file mode 100644
index 00000000..3857ca70
--- /dev/null
+++ b/tests/grain.md
@@ -0,0 +1,26 @@
+```grain
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+module Hello
+
+print("hello world" )
+
+
+```