Kathryn Louise "Kath" Johnson (born 21 January 1967 in King's Lynn, Norfolk) is a British former field hockey player.
Johnson was a member of the Great Britain squad that won the bronze medal at the 1992 Summer Olympics in Barcelona. She competed in three consecutive Summer Olympics, starting in 1992.
She has played club hockey for Pelicans Hockey Club, Harleston Magpies and Leicester.