Karl or Carl Ludwig may refer to:
Karl Ludwig (14 May 1886 – 3 February 1948) was a German international footballer.
Karl Ludwig is a Canadian sledge hockey player. He won a bronze medal at the 2014 Winter Paralympics in Sochi, Russia.
Started playing sledge hockey in 1995 with the Halton-Peel Cruisers.
He attended Humber College in Toronto from 2006-2008 for Tourism Management and again from 2011-2013 for Comedy Writing and Performance.
Ludwig won a gold medal at the 2013 IPC Ice Sledge Hockey World Championships and won a bronze medal at the 2014 Winter Paralympics in Sochi, Russia.