| district | incumbent | party | first elected | result | candidates |
| maryland 1 | robert bauman | republican | 1973 | re - elected | robert bauman (r) 53.0% thomas j hatem (d) 47.0% |
| maryland 2 | clarence long | democratic | 1962 | re - elected | clarence long (d) 77.1% john m seney (r) 22.9% |
| maryland 4 | marjorie holt | republican | 1972 | re - elected | marjorie holt (r) 58.1% fred l wineland (d) 41.9% |
| maryland 6 | goodloe byron | democratic | 1970 | re - elected | goodloe byron (d) 73.7% elton r wampler (r) 26.3% |
| maryland 7 | parren mitchell | democratic | 1970 | re - elected | parren mitchell (d) unopposed |