Christian Nsiah (born 25 December 1975) is a retired Ghanaian sprinter who specialized in the 200 metres.
He competed at the 1999 World Championships and the Olympic Games in 1996, 2000 and 2004, but he did not reach the final round on any occasion.
Together with Leo Myles-Mills, Aziz Zakari, and Eric Nkansah, he won the gold medal for the 4X100 meter relay at the 2003 All-Africa Games in Abuja, Nigeria.
He is the current holder of the Ohio Valley Conference indoor 55 meters record (6.24 secs).
He attended Middle Tennessee State University in Murfreesboro, Tennessee, where he obtained his bachelor's degree in business administration (1999), master's degree in financial economics (2001), and Doctor of Philosophy in economics (2005).