| Glenn Percy | |
| Birth Date: | 10 December 1928 |
| Birth Place: | near Carlyle, Kansas, U.S. |
| Death Place: | Iola, Kansas, U.S. |
| Coach Years1: | 1958-1959 |
| Coach Team1: | Kingman (KS) High School |
| Coach Years2: | 1960–1961 |
| Coach Team2: | Ponca City HS (OK) (backfield) |
| Coach Years3: | 1964-1967 |
| Coach Team3: | Field Kindley High School (Coffeyville, KS) |
| Coach Years4: | 1968–1971 |
| Coach Team4: | Hutchinson HS (KS) |
| Coach Years5: | 1972–1978 |
| Coach Team5: | Shawnee Mission East HS (KS) |
| Coach Years6: | 1980-1981 |
| Coach Team6: | Field Kindley HS |
| Coach Years7: | 1982-1983 |
| Coach Team7: | Wichita West HS (KS) |
| Coach Years8: | 1984–1988 |
| Coach Team8: | Ottawa |
| Coach Years9: | 1989–1991 |
| Coach Team9: | Hutchinson |
| Coach Years10: | 1992–1999 |
| Coach Team10: | Shawnee Mission East HS (KS) |
| Coach Years11: | 2000 |
| Coach Team11: | Iola HS (KS) |
| Overall Record: | 21–29 (college) 5–22 (junior college) 128-136-5 (high school) |
William Glenn Percy (December 10, 1928 – June 23, 2014)[1] was an American football coach. He was the 24th head football coach at the Ottawa University in Ottawa, Kansas, serving for five seasons, from 1984 to 1988, and compiling a record of 21–29.[2] After working in Ottawa for five seasons, Percy was hired by Hutchinson Community College of the Kansas Jayhawk Community College Conference (KJCCC).
Percy was the head football coach at six Kansas high schools, beginning at Kingman (KS) High School in 1958. He also coached at Hutchinson High School from 1968 to 1971, Wichita West High School from 1982 to 1983[3] and also had two stints at the head football coach at Field Kindley High School in Coffeyville, Kansas from 1964 to 1967 and 1980 to 1981 as well as at Shawnee Mission East High School in Prairie Village, Kansas, from 1972 to 1978 and 1992 to 1999. He concluded his coaching career at Iola High School in 2000.
Percy died at his home in Iola, Kansas, on June 23, 2014, at the age of 85.[1] He was posthumously inducted into the Greater Kansas City Football Coaches Association Hall of Fame in 2018.[4]