Asa Guevara (born 20 December 1995) is a sprinter from Trinidad and Tobago specialising in the 400 metres.

[2] He represented his country at the 2018 World Indoor Championships reaching the semifinals.

At the 2019 edition of the IAAF World Relays which took place in Yokohoma, Japan, Guevara ran on the third leg as part of the Trinidad and Tobago men's 4x400m relay.

After the two- year hiatus from sport due to the Covid-19 pandemic, Guevara finished second at the Trinidad and Tobago NGC National Senior Open Championships 2022 in the 400m in a time of 46.16s and was subsequently selected to run on the men's 4x400m relay squad at the 2022 Commonwealth Games in Birmingham, England.

This biographical article relating to Trinidadian athletics is a stub.