The 34th Independent Battery New York Light Artillery was an artillery battery that served in the Union Army during the American Civil War.

The battery fought at Cedar Mountain, Second Bull Run, Antietam, and Fredericksburg in 1862.

Battery L moved to the Western Theater where it served at Vicksburg, Jackson, and Knoxville in 1863.

Now named the 34th Battery, it transferred back to the Eastern Theater where it fought at the Wilderness, Spotsylvania, North Anna, Totopotomoy, Cold Harbor, and Petersburg.

The unit took part in the Appomattox campaign and the Grand Review of the Armies before being mustered out in June 1865.

Originally organized as Battery "L," 2nd New York Heavy Artillery, and mustered in on November 18, 1861.

Attached to Sturgis' Brigade, Military District of Washington, to June, 1862.

Artillery, 2nd Division, 9th Army Corps, to December, 1862.

Artillery, 3rd Division, 9th Army Corps, to February, 1863.

Artillery Brigade, 9th Army Corps, to June, 1865.

Pope's Campaign in Northern Virginia August 16-September 2.

Duty in the Defenses of Washington and in Pleasant Valley, Md., until October 27.

Moved to Newport News, Va., February 19; thence to Paris, Ky., March 26-April 2.

March to Nicholasville, Ky., August 18–25, and to Crab Orchard September 9–11.

March over Cumberland Mountains to Knoxville, Tenn., thence to Lenoir Station October 2–29.

Boydton Plank Road, Hatcher's Run, October 27–28.