diff --git a/markdownlint-cli2.js b/markdownlint-cli2.js
index 3c0125d6..ef8477a3 100755
--- a/markdownlint-cli2.js
+++ b/markdownlint-cli2.js
@@ -92,6 +92,31 @@ const requireConfig = (fs, dir, name, noRequire) => (
     )
 );
 
+// Read an options or config file in any format and return the object
+const readOptionsOrConfig = async (pathSystem, dirSystem, fs, noRequire) => {
+  const name = path.basename(pathSystem);
+  let options = null;
+  let config = null;
+  if (name.endsWith(".markdownlint-cli2.jsonc")) {
+    options = jsoncParse(await fs.promises.readFile(pathSystem, utf8));
+  } else if (name.endsWith(".markdownlint-cli2.yaml")) {
+    options = yamlParse(await fs.promises.readFile(pathSystem, utf8));
+  } else if (name.endsWith(".markdownlint-cli2.js")) {
+    options = requireConfig(fs, dirSystem, ".markdownlint-cli2.js", noRequire);
+  } else if (
+    name.endsWith(".markdownlint.jsonc") ||
+    name.endsWith(".markdownlint.json") ||
+    name.endsWith(".markdownlint.yaml") ||
+    name.endsWith(".markdownlint.yml")
+  ) {
+    config =
+      await markdownlintReadConfig(pathSystem, [ jsoncParse, yamlParse ], fs);
+  } else if (name.endsWith(".markdownlint.js")) {
+    config = requireConfig(fs, dirSystem, ".markdownlint.js", noRequire);
+  }
+  return options || { config };
+};
+
 // Filter a list of files to ignore by glob
 const removeIgnoredFiles = (dir, files, ignores) => {
   const micromatch = require("micromatch");
@@ -694,17 +719,21 @@ const main = async (params) => {
     // eslint-disable-next-line max-len
     `${name || packageName} v${packageVersion} (${libraryName} v${libraryVersion})`
   );
-
-  // TBD -config
-
+  // Read argv configuration file (if relevant and present)
+  let optionsArgv = null;
+  const [ configPath ] = (argv || []);
+  if ((name === "markdownlint-cli2-config") && configPath) {
+    optionsArgv =
+      await readOptionsOrConfig(configPath, baseDirSystem, fs, noRequire);
+  }
   // Process arguments and get base options
-  const globPatterns = processArgv(argv);
+  const globPatterns = processArgv(optionsArgv ? argv.slice(1) : argv);
   const { baseMarkdownlintOptions, dirToDirInfo } =
     await getBaseOptions(
       fs,
       baseDir,
       globPatterns,
-      optionsDefault,
+      optionsArgv || optionsDefault,
       fixDefault,
       noGlobs,
       noRequire