Ryann Ashley O'Toole (born February 11, 1987) is an American female professional golfer currently playing on the LPGA Tour.

[2] She returned to the Futures Tour in 2010, competed in 16 events, won twice, and finished 7th on the official season-ending money list.

She also played in her first LPGA tournament in August 2010 when she received a sponsor's exemption to the CN Canadian Women's Open in Winnipeg, but missed the cut.

She won her first LPGA Tour event on August 15, 2021, at the Trust Golf Women's Scottish Open with a 271 (−17), by three strokes over both Lydia Ko and Atthaya Thitikul.

O'Toole was a cast member on the reality television competition show, The Big Break Sandals Resort, which aired in 2010 on Golf Channel.