Yes, you can say you do Taekwondo. It is a martial art that emphasizes kicking and striking techniques, and it is commonly practiced as a sport and for self-defense. People often describe their involvement in Martial Arts by saying they "do" or "practice" Taekwondo, similar to how one might refer to other sports or activities.
The correct spelling is tae kwon do.
Hyun In-taek was born in 1954.
Choi Eun-Taek was born in 1938.
Choi Eun-Taek died in 2007.
Kim Yoo-Taek was born in 1963.
Kim Taek-Yong was born in 1989.
Kwak Kyung-taek was born in 1966.
Shim Soon-Taek was born in 1824.
Shim Soon-Taek died in 1906.
Kim Taek-Soo was born in 1970.
Im Kwon-taek was born in 1936.
Song Kyung-Taek was born in 1983.