Tatiana Guimarães Weston-Webb (born May 9, 1996[1]) is a Brazilian surfer based in Kauai, Hawaii.

[5] The Weston-Webb name is a heritable double-barrelled surname, created through the marriage of two children from significant families in that industry.

[5] The pair married in an intimate beachfront ceremony held at the Princeville Resort, a Kauai hotel her father had worked at for many years, after the security guard allowed them to use the otherwise expensive site at no cost during the property's renovation.

[10] On April 29, 2018, she announced her switch to Brazil representation for the remainder of the 2018 WSL Championship Tour season, aiming to compete representing her native country in the 2020 Summer Olympics in Tokyo, one of her dreams since surfing was announced as an official Olympic sport.

[11] In the 2024 Summer Olympics, Weston-Webb reached the final, and only lost the gold to world champion Caroline Marks by a score of 0.18.