Plana may refer to:
plural of Latin word Planum used in planetary geology
People Dídac Plana (born 1990), Spanish futsal player Giovanni Antonio Amedeo Plana (1781–1864) was an Italian astronomer and mathematician Plana (crater), a crater on the Moon named after the astronomer Israel Hernandez Plana (born 1970), Cuban judoka Jaume Vallcorba Plana (1949–2014), Spanish philologist and publisher Josefina Tanganelli Plana (1904–1966), Catalan cartoonist and painter Tony Plana (born 1952), a Cuban-American actor
Places Antarctica Plana Peak, on Livingston Island in the South Shetland Islands
Bahamas Plana Cays, two small islands in the southern Bahama Islands
Bosnia and Herzegovina Plana, Bileća, village in the municipality of Bileća, Republika Srpska
Bulgaria Plana Mountain in western Bulgaria Plana, Bulgaria, a village in the Sofia City Province
Czech Republic Planá (disambiguation), multiple places
Montenegro Plana, Kolašin, village in the municipality of Kolašin
Serbia Plana (Kraljevo), village in the municipality of Kraljevo Plana (Paraćin), village in the municipality of Paraćin Plana (Sjenica), village in the municipality of Sjenica Velika Plana, town and municipality in the Podunavlje District Velika Plana (Prokuplje), village in the municipality of Prokuplje
Spain Plana Alta, comarca in the province of Castellón, Valencian Community Plana Baixa, comarca in the province of Castellón, Valencian Community Plana d'Utiel, comarca in the province of Valencia, Valencian Community
United States Plana, South Dakota, former village
Other Abel–Plana formula, a summation formula in mathematics Synemon plana, commonly known as the golden sun moth, a diurnal moth native to Australia Ecklonia kurome f. plana, a brown alga subspecies found in the Sea of Japan