Vint was born in Tulsa, Oklahoma. He appeared in a number of supporting roles during the 1970s in films such as The McMasters (1970), Two-Lane Blacktop (1971), The Panic in Needle Park (1971), Welcome Home, Soldier Boys (1971), Unholy Rollers (1972), Badlands (1973), Macon County Line (1974), Earthquake (1974), Breakout (1975), Checkered Flag or Crash (1977) and The Lady in Red (1979). He also made guest appearances on such television series as Centennial, Police Story, Emergency!, Hawaii Five-O, Adam-12, Lou Grant and Baretta.
Vint appeared in several films with his brother Jesse Vint. He was married to Susan Mullen and had three daughters — Kelly, Kate and Megan Vint, also actors. Vint and Mullen eventually divorced.
Alan Vint's long-running disease was diagnosed as rheumatoid arthritis many years before his death. Ultimately his major organs failed as a result of this disease, and he died in Sherman Oaks, California, in 2006.
|1971||The Panic in Needle Park||Hotch|
|1971||Two-Lane Blacktop||Man in Roadhouse|
|1971||Welcome Home, Soldier Boys||Kid|
|1974||Macon County Line||Chris Dixon|
|1977||Checkered Flag or Crash||Doc Pyle|
|1979||The Lady in Red||Melvin Purvis|
|1982||The Ballad of Gregorio Cortez||Mike Trimmell|
|1993||Family Prayers||Delivery Man|
|1999||Malevolence||Deputy Warden||(final film role)|