diff --git a/src/geometries/ExtrudeGeometry.js b/src/geometries/ExtrudeGeometry.js
index 72cc5860658b03b55da683524e63adb168651527..513f18fdf5eefcc1c5c582d43f2eaea0d07b6da3 100644
--- a/src/geometries/ExtrudeGeometry.js
+++ b/src/geometries/ExtrudeGeometry.js
@@ -49,6 +49,17 @@ function ExtrudeGeometry( shapes, options ) {
 ExtrudeGeometry.prototype = Object.create( Geometry.prototype );
 ExtrudeGeometry.prototype.constructor = ExtrudeGeometry;
 
+ExtrudeGeometry.prototype.toJSON = function () {
+
+	var data = Geometry.prototype.toJSON.call( this );
+
+	var shapes = this.parameters.shapes;
+	var options = this.parameters.options;
+
+	return toJSON( shapes, options, data );
+
+};
+
 // ExtrudeBufferGeometry
 
 function ExtrudeBufferGeometry( shapes, options ) {
@@ -717,6 +728,19 @@ function ExtrudeBufferGeometry( shapes, options ) {
 ExtrudeBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
 ExtrudeBufferGeometry.prototype.constructor = ExtrudeBufferGeometry;
 
+ExtrudeBufferGeometry.prototype.toJSON = function () {
+
+	var data = BufferGeometry.prototype.toJSON.call( this );
+
+	var shapes = this.parameters.shapes;
+	var options = this.parameters.options;
+
+	return toJSON( shapes, options, data );
+
+};
+
+//
+
 var WorldUVGenerator = {
 
 	generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {
@@ -774,5 +798,35 @@ var WorldUVGenerator = {
 	}
 };
 
+function toJSON( shapes, options, data ) {
+
+	//
+
+	data.shapes = [];
+
+	if ( Array.isArray( shapes ) ) {
+
+		for ( var i = 0, l = shapes.length; i < l; i ++ ) {
+
+			var shape = shapes[ i ];
+
+			data.shapes.push( shape.uuid );
+
+		}
+
+	} else {
+
+		data.shapes.push( shapes.uuid );
+
+	}
+
+	//
+
+	if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();
+
+	return data;
+
+}
+
 
 export { ExtrudeGeometry, ExtrudeBufferGeometry };
diff --git a/src/loaders/ObjectLoader.js b/src/loaders/ObjectLoader.js
index 4921bb198f40de42cb3488bc3f76a04a17cff28e..f7adc4efe875e5cd60675cc518b47420ee6e0d25 100644
--- a/src/loaders/ObjectLoader.js
+++ b/src/loaders/ObjectLoader.js
@@ -51,6 +51,7 @@ import { BufferGeometryLoader } from './BufferGeometryLoader.js';
 import { JSONLoader } from './JSONLoader.js';
 import { FileLoader } from './FileLoader.js';
 import * as Geometries from '../geometries/Geometries.js';
+import * as Curves from '../extras/curves/Curves.js';
 
 /**
  * @author mrdoob / http://mrdoob.com/
@@ -377,6 +378,35 @@ Object.assign( ObjectLoader.prototype, {
 
 						break;
 
+
+					case 'ExtrudeGeometry':
+					case 'ExtrudeBufferGeometry':
+
+						var geometryShapes = [];
+
+						for ( var j = 0, jl = data.shapes.length; j < jl; j ++ ) {
+
+							var shape = shapes[ data.shapes[ j ] ];
+
+							geometryShapes.push( shape );
+
+						}
+
+						var extrudePath = data.options.extrudePath;
+
+						if ( extrudePath !== undefined ) {
+
+							data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );
+
+						}
+
+						geometry = new Geometries[ data.type ](
+							geometryShapes,
+							data.options
+						);
+
+						break;
+
 					case 'BufferGeometry':
 
 						geometry = bufferGeometryLoader.parse( data );