Errie Claassens (born 27 October 1981) is a former South Africa rugby union player. Errie is the brother of Toulon player Michael Claassens who plays at scrum half and has represented the Free State Cheetahs and the Springboks. Claassens moved to the UK in 2005 to sign for the Rotherham Titans where he spent four seasons, developing from a bit part player into a proven try scorer. Errie formerly played as a fullback or winger for Worcester Warriors. On 27 January 2015, Claassens announced his retirement from professional rugby due to ongoing injuries.