'''Casis''' or '''Casís''' is a surname. Notable people with this name include:
* Ana Casís, Panamanian sociologist, statistician, and demographer * Jazminne Casis, Australian gymnast in 2012 Pacific Rim Gymnastics Championships – Women's Artistic Gymnastics * Julio Súmar Casis (born 1931), Peruvian chess player * Luis Casis, Panamanian politician, vice-presidential candidate in 2019 Panamanian general election * Tomasa Ester Casís (1878–1962), Panamanian teacher and women's rights activist
==See also== * Center for the Advancement of Science in Space (CASIS), managing organization for the International Space Station
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