Grecian is an adjective referring to artefacts or culture of Ancient Greece.

Grecian may also refer to:

• Grecian runes, an alphabet dating to Ancient Greece
• Grecian philosophy, a system of thought and aesthetics
• Grecian vase, pottery of ancient Greece
• Ode on a Grecian Urn, a poem written by John Keats in 1819

Maritime

• Grecian (1812), an American 5-gun schooner captured by the British in 1814 and renamed HMS Grecian
• Grecian (1824 ship), a ship wrecked on the New South Wales coast in 1864
• Grecian (barque), sailing ship wrecked in 1850 off Port Adelaide
• HMS Grecian: any of four ships, see the disambiguation page HMS Grecian

• HMS Grecian was the 5-gun American schooner Grecian (1812) captured in 1814 and armed with 10 guns
• HMS Grecian, an Auk-class minesweeper transferred to Britain under Lend-lease

• SS Grecian, one of the Allan Line Royal Mail Steamers, saved the Cromartyshire in 1898

Biology

• Grecian anomalous blue, a butterfly found on the Balkan Peninsula
• Grecian shoemaker, a butterfly of Central and South America
• Grecian foxglove, a poisonous plant
• Grecian juniper or Greek juniper, a large shrub
• Grecian laurel, a large aromatic shrub
• Grecian rose, Geum quellyon, a plant native to Chile

Others

• Grecian bend, a stooped posture, also a dance, named after the gracefully inclined figures seen in the art of Ancient Greece
• Grecian Coffee House, a London coffee house founded around 1665, a favoured meeting-place for members of the Royal Society
• Grecian Formula, a men's hair coloring product
• Grecian Guild Pictorial, an American physique magazine published from 1955 until 1968
• Grecian Old Style, better known as Goudy Old Style, a typeface
• Grecian Queen, an American champion Thoroughbred racehorse, foaled in 1950
• Grecian Rocks (reef), a coral reef in the Key Largo area
• Grecian Shelter, an architectural feature of Prospect Park in Brooklyn, New York
• The Grecians, nickname of Exeter City F.C.