Geraldine Viswanathan is an Australian actress. She gained attention in the role of Kayla in the 2018 film Blockers, for which Refinery29 referred to her as "the film's breakout star." Viswanathan also starred in the 2019 coming-of-age film Hala, as well as Bad Education opposite Hugh Jackman and Allison Janney. She currently appears in the TBS comedy anthology, Miracle Workers, and previously played a recurring role in Australian series Janet King.