Plana may refer to:
- plural of Latin word Planum used in planetary geology
People
- 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