Ottmar Kurt Herrmann Walter (6 March 1924 – 16 June 2013) was a German footballer.

He played together with his brother, Fritz Walter, at the club 1. FC Kaiserslautern. They also played together for the Germany national football team in the 1954 FIFA World Cup. Walter scored four goals in the tournament as West Germany won their first ever World Cup title. In total, Walter earned 20 caps and scored 10 goals for Germany. For his club 1. FC Kaiserslautern he scored unequaled 336 goals in 321 league and cup matches. Walter debuted in the first team at the age of 18 in 1942 as an outside left in a 7–1 rout of 1. FC Kaiserslautern against SV Waldhof Mannheim.

During World War II, Walter was drafted into the Kriegsmarine and suffered heavy injuries in his right knee. After several operations, he was forced to end his career in 1958.

By the late-1940s, Walter was the center forward of 1. FC Kaiserslautern. Like his brother Fritz, he treated the ball elegantly and was also pacy and possessed a powerful shot. As a center forward he also often moved to the wing.

After the end of his career, he concentrated on operating a gas station which he had taken at rent in 1954. When the contract was signed, Walter had read over the fine print in the contract which determined that if the contract got withdrawn, the gas station and the goods on the ground of the gas station would subrogate to the new leaseholder. This happened in 1969 and in consequence of this Walter tried to commit suicide. However, he survived and later described that attempted suicide as a "panic reaction". Later Walter found a job as an employee of the city of Kaiserslautern.

He died 16 June 2013.