1990 Major Indoor Lacrosse League season

The 1990 season is the 4th season of the league that began on January 5, 1990, and concluded with the championship game on April 13.

Team movement
The Pittsburgh Bulls made their MILL debut in 1990, while the Washington Wave ceased operations.

All-Pro Teams
First Team:
 * John Fay, New England
 * Brad Kotz, Philadelphia
 * Brian Nikula, Pittsburgh
 * Rick Sowell, Baltimore
 * John Tucker, Philadelphia
 * Ted Sawicki, Detroit (goalie)

Second Team:
 * Don Borges, New York
 * Toby Boucher, New England
 * Ron Martinello, Detroit
 * Dave Pietramala, Pittsburgh
 * Tim Welsh, Baltimore
 * Dan O'Neill, Boston (goalie)

Statistics leaders
Bold numbers indicate new single-season records. Italics indicate tied single-season records.