| Karl Guðmundsson | |
| Fullname: | Karl M. Guðmundsson |
| Birth Date: | 28 January 1924 |
| Birth Place: | Iceland |
| Position: | Defender |
| Clubs1: | Fram |
| Nationalyears1: | 1946 - 1954 |
| Nationalteam1: | Iceland[1] |
| Nationalcaps1: | 10 |
| Nationalgoals1: | 0 |
| Manageryears1: | 1948 |
| Managerclubs1: | ÍA |
| Manageryears2: | 1952 - 1954 |
| Managerclubs2: | Fram |
| Manageryears3: | 1954 - 1956 |
| Managerclubs3: | Iceland |
| Manageryears4: | 1956 |
| Managerclubs4: | Fram |
| Manageryears5: | 1958 |
| Managerclubs5: | Lillestrøm SK |
| Manageryears6: | 1959 |
| Managerclubs6: | Fram |
| Manageryears7: | 1959 |
| Managerclubs7: | Iceland |
| Manageryears8: | 1960 |
| Managerclubs8: | Lillestrøm SK |
| Manageryears9: | 1961 |
| Managerclubs9: | ÍBH |
| Manageryears10: | 1961 |
| Managerclubs10: | Iceland |
| Manageryears11: | 1962 |
| Managerclubs11: | Sandefjord BK |
| Manageryears12: | 1963 - 1966 |
| Managerclubs12: | Iceland |
| Manageryears13: | 1964 |
| Managerclubs13: | KR |
| Manageryears14: | 1966 - 1968 |
| Managerclubs14: | Fram |
Karl M. Guðmundsson[2] (28 January 1924 - 24 June 2012) was an Icelandic football manager and former player. He managed the Iceland national team from 1954 to 1956.[3] He also coached Lillestrøm SK, KR, Fram.[4]