Nineveh Shaw McKeen (c. 1837 – December 22, 1890) was a Union soldier who fought in the American Civil War and received the Medal of Honor.

During the Battle of Stones River, on December 30, 1862, McKeen was noted for his charge into the enemy where he was wounded three times.

Due to his service, McKeen received brevet promotions of captain and major of volunteers.

He received the Medal of Honor for his actions at Stones River and Liberty Gap on June 23, 1890.

He would die a few months later on December 22, 1890 and was buried in Glenwood Cemetery in Collinsville, Illinois.