Leonie Beu (born 28 November 1998) is a Papuan track and field athlete who competes in sprinting.

She represented Papua New Guinea in the women's 100 metres event at the 2024 Summer Olympics.

[1] In 2023, Beu became the fourth woman from Papua New Guinea to run inside 24 seconds and the number 2 all-time in the 200 metres clocking 23.61 seconds in Denton, Texas, United States.

[2] At the 2023 Oceania Athletics Cup in Saipan, Northern Mariana Islands, she helped Team Melanesia win the fourth Oceania Cup by winning a total of 28 points in the 100, 200, and 400 meters.

[4][5] She finished eighth in her Heat with a time of 11.73 seconds and did not progress to the semi-finals.