Christian Ahlmann (born December 17, 1974 in Marl, North Rhine-Westphalia) is a German equestrian who competes in the sport of show jumping. He ranks first in the FEI Longines World Ranking List.
Ahlmann won the FEI Show Jumping World Cup with Taloubet Z in 2011. In 2014, he was the CHIO Aachenwinner. He has won several medals with the German team at European Championships, World Championships and Olympic Games since 2003. Christian Ahlmann has been seen as an exceptional talent from an early age, being one of the youngest riders ever to receive the "goldenes Reitabzeichen", at age 14, and is today considered a calm, fine rider with a soft hand.