diff --git a/lib/repl.js b/lib/repl.js
index 60ea4457ab1bf6..5a5b4acdd5e860 100644
--- a/lib/repl.js
+++ b/lib/repl.js
@@ -250,7 +250,12 @@ writer.options = { ...inspect.defaultOptions, showProxy: true };
 // Converts static import statement to dynamic import statement
 const toDynamicImport = (codeLine) => {
   let dynamicImportStatement = '';
-  const ast = acornParse(codeLine, { __proto__: null, sourceType: 'module', ecmaVersion: 'latest' });
+  let ast;
+  try {
+    ast = acornParse(codeLine, { __proto__: null, sourceType: 'module', ecmaVersion: 'latest' });
+  } catch {
+    return codeLine;
+  }
   acornWalk.ancestor(ast, {
     ImportDeclaration(node) {
       const awaitDynamicImport = `await import(${JSONStringify(node.source.value)});`;
diff --git a/test/parallel/test-repl-import-incomplete-crash.js b/test/parallel/test-repl-import-incomplete-crash.js
new file mode 100644
index 00000000000000..0959a0cef5c34d
--- /dev/null
+++ b/test/parallel/test-repl-import-incomplete-crash.js
@@ -0,0 +1,10 @@
+'use strict';
+require('../common');
+const repl = require('repl');
+
+// Regression test for https://github.com/nodejs/node/issues/63551:
+// Typing a bare `import` keyword in the REPL must not crash the process.
+const replserver = new repl.REPLServer();
+
+replserver.emit('line', 'import');
+replserver.emit('line', '.exit');