Duncan Ende (born 19 February 1985) is an American racing driver currently competing in the TCR International Series.
Ende began his career in 2005 in the Skip Barber Western Regional Series, finishing second in the standings.
In 2006 he raced in both the Champ Car Atlantic series and the IMSA Lites, finishing thirty-sixth and second in the standings respectively.
For 2008 he switched to the Rolex Sports Car Series, he raced there for many seasons, finishing seventh in the GS standings in 2009, he took one win and three podiums that year.
He continued in the American Le Mans Series for 2011, racing there for up until 2013, with his best championship finish being second in the GTC standings in 2011.