The 136th New York Infantry Regiment (aka "Ironclads") was an infantry regiment in the Union Army during the American Civil War.

The 136th New York Infantry was organized at Portage, New York beginning August 8, 1862 and mustered in for three years service on September 25, 1862 under the command of Colonel James Wood Jr.

The regiment was attached to 1st Brigade, 3rd Division, XI Corps, Army of the Potomac, to November 1862.

3rd Brigade, 3rd Division, XX Corps, Army of the Cumberland, to June 1865.

The 136th New York Infantry mustered out of service June 13, 1865.

Recruits and veterans were transferred to the 60th New York Volunteer Infantry.

Camp at Bristoe Station August 1 to September 24.

Marched along the line of the Nashville & Chattanooga Railroad to Lookout Valley, Tenn., October 25–28.

Battles about Dallas, New Hope Church, and Allatoona Hills May 26-June 5.

Operations about Marietta and against Kennesaw Mountain June 10-July 2.

Ruff's Station, Smyrna Camp Ground, July 4.

Operations at Chattahoochie River Bridge August 26-September 2.

Skirmish of Goldsboro Road, near Fayetteville, N. C., March 14.