Alan Peacock (born 29 October 1937 in Middlesbrough) is a former English footballer.

He spent the majority of his career at Middlesbrough, also playing for Leeds United and Plymouth Argyle. He joined Middlesbrough in 1954 and became a regular in the side in 1958 alongside Brian Clough. Clough scored the majority of the goals, partly due to Peacock's unselfish attitude in front of goal. Clough joined Sunderland in 1961 and the following season Peacock scored 24 in 34 games.

Peacock's high scoring rate earned him a place in the 1962 World Cup England squad. He made his international debut in the Group Four victory over Argentina. Since then only Allan Clarke in 1970 has made his debut in a World Cup finals match. In total, he earned 6 caps and scored 3 goals for England, two of which came in a 4–0 victory over Wales in November 1962.

In 1964 he moved to Leeds United for £55,000 to help Revie's team with promotion, which was achieved that season with Peacock scoring 8 goals in 14 games. He stayed at Leeds for a further 3 seasons scoring 30 goals in 65 games, yet more frequent injuries forced his sale to Plymouth Argyle for £10,000 in 1967 where he managed only 1 season before being forced to retire due to injuries at only 30 years old in 1968. He returned to his home town after retirement.

John Gaston Peacock (January 10, 1910 – October 17, 1981) was a part-time catcher in Major League Baseball who played for three different teams between 1937 and 1945. Listed at 5 ft 11 in (1.80 m), 165 lb., Peacock batted left-handed and threw right-handed. He was born in Fremont, North Carolina.

A light-hitting catcher, Peacock was good defensively and knew how to handle his pitching staff. As a hitter, he hit only one home run, although he amassed career totals of 1734 at-bats.

Peacock entered the majors in 1937 with the Boston Red Sox, playing for them through the 1944 midseason before joining the Philadelphia Phillies (1944–1945) and Brooklyn Dodgers (1945). In his rookie season, he hit a .313 batting average in nine games played. The next eight years he averaged 76.25 games in each season, with a career-high 92 games in 1939. His most productive years came with Boston, when he hit .303 with a career-high 39 RBI in 1938, and .284 with 20 doubles in 1944.

In a nine-season career, Peacock was a .262 hitter with one home run and 194 RBI in 619 games, including 175 runs, 455 hits, 74 doubles, 16 triples, 14 stolen bases, and a .333 on-base percentage. A disciplinated hitter with a great knowledge of the strike zone, he posted a solid 2.51 walk-to-strikeout ratio (183-to-73).