István Timár should not be confused with István Timár-Geng.
István Timár-Geng (7 January 1940 - 4 December 1994) was a Hungarian sprint canoer who competed from the mid-1960s to the early 1970s. At the 1968 Summer Olympics in Mexico City, he won two medals with a silver in the K-2 1000 m and a bronze in the K-4 1000 m events.
Timár-Geng also won four medals at the ICF Canoe Sprint World Championships with two gold (K-2 10000 m and K-4 10000 m: both 1963), a silver (K-4 10000 m: 1971), and a bronze (K-4 1000 m: 1970).