Isabella Deilert (born 5 June 1994) is a Swedish professional golfer playing on the Ladies European Tour.

She competed in bandy, a form of hockey, and was a member of the Swedish National Team before focusing on golf.

[1] Her brother Alexander Deilert was an accomplished junior golfer and is a professional ice hockey player, drafted by the Calgary Flames in 2008.

She was runner-up at an LET Access Series event, the Ljungbyhed Park PGA Ladies Open, two strokes behind Pamela Pretswell of Scotland.

[3][4] Deilert attended Oklahoma State University–Stillwater on a golf scholarship between 2013 and 2017, and turned professional in 2018.