| Ron Haigler | |
| Career Position: | Power forward |
| Height Ft: | 6 |
| Height In: | 8 |
| Weight Lb: | 195 |
| Birth Place: | Brooklyn, New York, U.S. |
| High School: | James Madison (Brooklyn, New York) |
| College: | Penn (1972–1975) |
| Draft Year: | 1975 |
| Draft Round: | 4 |
| Draft Pick: | 68 |
| Draft Team: | Chicago Bulls |
| Career Start: | 1976 |
| Career End: | 1985 |
| Years1: | 1976–1977 |
| Team1: | Wilkes-Barre Barons |
| Years2: | 1978–1984 |
| Team2: | Eczacıbaşı |
| Years3: | 1984–1985 |
| Team3: | Efes Pilsen |
| Coach Start: | 1975 |
| Coach End: | 1978 |
| Cyears1: | 1975–1977 |
| Cteam1: | Penn Charter School (assistant) |
| Cyears2: | 1977–1978 |
| Cteam2: | Penn (assistant) |
| Highlights: |
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Ronald Haigler (born 1953) is an American former basketball player and current high school basketball coach. He is best known for his collegiate career at the University of Pennsylvania between 1972–73 and 1974–75. A 6'8" power forward, Haigler helped guide the Quakers to several consecutive Ivy League titles as well as setting numerous offensive statistical records at Penn. He was named the first ever Ivy League Men's Basketball Player of the Year as a senior and was twice named the Philadelphia Big 5 Player of the Year.
After college, he was chosen as the 68th overall pick in the 1975 NBA draft by the Chicago Bulls. He was also chosen in the 1975 ABA Draft by the Memphis Sounds as the 23rd overall pick, but Haigler ultimately did not play in either league. He did play for seven seasons in the Turkish Basketball League for Eczacıbaşı (1978 to 1984) and Efes Pilsen (1984–85). As of 2016, he coaches high school girls basketball in Strawberry Mansion, Philadelphia, Pennsylvania.