Circa (from Latin, meaning "around"), usually abbreviated c. or ca. (also circ. or cca.), means "approximately" in the English language, usually referring to a date. Circa is widely used in genealogy and historical writing when the dates of events are not precisely known.

When used in date ranges, the term "circa" is applied before each approximate date, while dates without "circa" immediately preceding them are generally assumed to be known with certainty.

Examples:

Ryan Gallant, (born May 25, 1982, in Waltham, Massachusetts, USA) is a professional skateboarder,his stance is goofy footed currently riding for Expedition One Skateboards, Independent Trucks, Bones Swiss Bearings, Gold Wheels, MOB Grip, Circa.^{[citation needed]}

He was raised in Southboro, Massachusetts, and he currently resides in Carlsbad, California. He was first noticed in the skate video PJ Ladd's Wonderful Horrible Life, a shop video from Coliseum skate shop located in Boston. He is also affiliated with True East Skateshop, which is an East Coast based chain of mom and pop shops. Gallant was first sponsored by Expedition One skateboards and had a video part in their first video entitled, "Alone". Gallant also had video parts in Gold Wheels, "Got Gold?", Transworld Skateboarding's 2005 video entitled, "First Love", and a short video montage in DC's DC Video. In April 2009, Gallant left his long time sponsor DC Shoes and established a sponsorship deal with Circa.

He is also featured in the 2007 video game, EA Skate as a playable character. He is also featured in the EA Skate sequels, Skate 2 and Skate 3.