The Rimac Concept One, sometimes stylized as Concept_One, is a two-seat high-performance electric car designed and manufactured in Croatia by Rimac Automobili. With a total output of 913 kW and an acceleration time from 0–100 km/h (0–62 mph) in 2.5 seconds, the Rimac Concept One was claimed to be the world's fastest accelerating electric vehicle in 2013.

An electric car or electric vehicle (EV) is a passenger automobile that is propelled by an electric traction motor, using only energy stored in on-board batteries. Compared to conventional internal combustion engine (ICE) vehicles, electric cars are quieter, more responsive, have superior energy conversion efficiency and no exhaust emissions and lower overall vehicle emissions. The term "electric car" normally refers to plug-in electric vehicle, typically a battery electric vehicle (BEV), but broadly may also include plug-in hybrid electric vehicle (PHEV), range-extended electric vehicle (REEV) and fuel cell electric vehicle (FCEV).