The Lone Star Alliance (LSA) is a lacrosse-only athletic conference affiliated with the Men's Collegiate Lacrosse Association (MCLA).

[2] Seven institutions currently make up the LSA Division II.

Ten institutions currently make up the LSA Division III.

The league comprises members of various NCAA collegiate athletic conferences.

Note: From 1976 to 1990 the LSA was known as the SWLA (South Western Lacrosse Association)