Tatiana Guimarães Weston-Webb (born May 9, 1996) is a Brazilian–American surfer based in Kauai, Hawaii. She was the only rookie on the WCT (professional surfing) (World Championship Tour) in 2015. Weston-Webb wears jersey number 9, and her 2016 'CT rank is number 4. She competed in both the 2020 and 2024 Summer Olympics for Brazil, winning silver in the latter.