diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -95,6 +95,8 @@
     'ArcanistJSHintLinterTestCase' => 'lint/linter/__tests__/ArcanistJSHintLinterTestCase.php',
     'ArcanistJSONLintLinter' => 'lint/linter/ArcanistJSONLintLinter.php',
     'ArcanistJSONLintLinterTestCase' => 'lint/linter/__tests__/ArcanistJSONLintLinterTestCase.php',
+    'ArcanistJSONLinter' => 'lint/linter/ArcanistJSONLinter.php',
+    'ArcanistJSONLinterTestCase' => 'lint/linter/__tests__/ArcanistJSONLinterTestCase.php',
     'ArcanistJscsLinter' => 'lint/linter/ArcanistJscsLinter.php',
     'ArcanistJscsLinterTestCase' => 'lint/linter/__tests__/ArcanistJscsLinterTestCase.php',
     'ArcanistLandWorkflow' => 'workflow/ArcanistLandWorkflow.php',
@@ -276,6 +278,8 @@
     'ArcanistJSHintLinterTestCase' => 'ArcanistArcanistLinterTestCase',
     'ArcanistJSONLintLinter' => 'ArcanistExternalLinter',
     'ArcanistJSONLintLinterTestCase' => 'ArcanistArcanistLinterTestCase',
+    'ArcanistJSONLinter' => 'ArcanistLinter',
+    'ArcanistJSONLinterTestCase' => 'ArcanistArcanistLinterTestCase',
     'ArcanistJscsLinter' => 'ArcanistExternalLinter',
     'ArcanistJscsLinterTestCase' => 'ArcanistArcanistLinterTestCase',
     'ArcanistLandWorkflow' => 'ArcanistBaseWorkflow',
diff --git a/src/lint/linter/ArcanistJSONLinter.php b/src/lint/linter/ArcanistJSONLinter.php
new file mode 100644
--- /dev/null
+++ b/src/lint/linter/ArcanistJSONLinter.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * A linter for JSON files.
+ */
+final class ArcanistJSONLinter extends ArcanistLinter {
+
+  public function getInfoName() {
+    return 'JSON Lint';
+  }
+
+  public function getInfoDescription() {
+    return pht('Detect syntax errors in JSON files.');
+  }
+
+  public function getLinterName() {
+    return 'JSON';
+  }
+
+  public function getLinterConfigurationName() {
+    return 'json';
+  }
+
+  public function lintPath($path) {
+    $data = $this->getData($path);
+
+    try {
+      $parser = new PhutilJSONParser();
+      $parser->parse($data);
+    } catch (PhutilJSONParserException $ex) {
+      $this->raiseLintAtLine(
+        $ex->getSourceLine(),
+        $ex->getSourceChar(),
+        $this->getLinterName(),
+        $ex->getMessage());
+    }
+  }
+
+}
diff --git a/src/lint/linter/__tests__/ArcanistJSONLinterTestCase.php b/src/lint/linter/__tests__/ArcanistJSONLinterTestCase.php
new file mode 100644
--- /dev/null
+++ b/src/lint/linter/__tests__/ArcanistJSONLinterTestCase.php
@@ -0,0 +1,11 @@
+<?php
+
+final class ArcanistJSONLinterTestCase extends ArcanistArcanistLinterTestCase {
+
+  public function testJSONLinter() {
+    $this->executeTestsInDirectory(
+      dirname(__FILE__).'/jsonlint/',
+      new ArcanistJSONLinter());
+  }
+
+}