The season consisted of 34 official money events.

The Mazda LPGA Championship was the first tournament to offer a $1,000,000 purse and the first to have a winner's share of over $100,000.

There were seven first-time winners in 1990: Jane Crafter, Cathy Gerring, Cathy Johnston, Kris Monaghan, Barb Mucha, Tina Purtzer, and Maggie Will.

The tournament results and award winners are listed below.

The following table shows all the official money events for the 1990 season.