The 1990 Toronto Blue Jays season was the franchise's 14th season of Major League Baseball. It resulted in the Blue Jays finishing second in the American League East with a record of 86 wins and 76 losses. It was their first full season in the SkyDome, where an MLB attendance record of 3,885,284 was set that year. The Blue Jays led the division by 1½ games over the Boston Red Sox with one week left in the season. However, they then proceeded to drop six of their last eight games, losing the division title to the Red Sox by a two-game margin.