Peter Louis Pihos (; October 22, 1923 – August 16, 2011) was an American football player and coach.
Pihos played college football, principally as an end and fullback, for Indiana University from 1942 to 1943 and 1945 to 1946. He was selected as a first-team All-American in 1942, 1943, and 1945. His college playing career was interrupted by service in the United States Army during World War II. He was inducted into the College Football Hall of Fame in 1966, the first Indiana player to be so honored.
Pihos played professional football as an end in the National Football League (NFL) for the Philadelphia Eagles from 1947 to 1955. While with the Eagles, he helped the team win back-to-back NFL championships in 1948 and 1949. He was selected six times to play in the Pro Bowl (1950–1955) and six times as a first-team All-Pro (1948, 1949, 1952–1955). During his career, he was one of the NFL's leading receivers. He was named to the NFL 1940s All-Decade Team in 1969 and inducted into the Pro Football Hall of Fame in 1970.
After his playing career was over, Pihos was the head football coach for National Agricultural College (later renamed Delaware Valley University) from 1956 to 1958. He also held coaching positions with Tulane University (assistant coach, 1959–1960) and the Richmond Rebels (head coach, 1964–1965).