The 2011–12 Professional Arena Soccer League season was the fourth season for the American professional indoor soccer league, now using the nickname "PASL" instead of "PASL-Pro". The San Diego Sockers became the first team in league history to finish a season undefeated. The Sockers won their third straight PASL Championship and the first Ron Newman Cup trophy by defeating the Detroit Waza 10-7 at the Del Mar Arena, home of the Sockers.