| Frederick C. Malkus Jr. | |
| Birth Date: | July 1, 1913 |
| Birth Place: | Baltimore, Maryland |
| Party: | Democrat |
| Spouse: | Margaret "Maggie" Moorer |
| State Senate: | Maryland |
| District: | 37th[1] |
| Term Start: | 1983 |
| Term End: | 1994 |
| Predecessor: | Harry J. McGuirk |
| Successor: | Richard F. Colburn |
| State Senate2: | Maryland |
| District2: | 35th[2] |
| Term Start2: | 1975 |
| Term End2: | 1982 |
| Successor2: | William H. Amoss |
| State Senate3: | Maryland |
| District3: | 16th[3] |
| Term Start3: | 1967 |
| Term End3: | 1974 |
| Successor3: | Newton I. Steers Jr. |
| State Senate4: | Maryland |
| District4: | ? |
| Term Start4: | 1952 |
| Term End4: | 1966 |
| State Delegate5: | Maryland |
| District5: | ? |
| Term Start5: | 1947 |
| Term End5: | 1951 |
Frederick C. Malkus Jr. (July 1, 1913 – November 9, 1999) was a Democratic state legislator from Maryland.[4] He served in the Maryland House of Delegates from 1947 to 1951 and then in the Maryland State Senate until 1994. When he retired, he had served for 48 years, making him the longest serving legislator in the US.[5] He never lost a re-election bid, though he did lose a 1973 congressional race to Republican Robert E. Bauman.[6] In 1987, a new four-lane U.S. 50 bridge over the Choptank River, the Frederick C. Malkus Bridge, was named in his honor, the first bridge to be named for a living Marylander.