| Walter Arendt | |
| Office: | Federal Minister for Labour and Social Affairs |
| Term Start: | 22 October 1969 |
| Term End: | 14 December 1976 |
| Chancellor: | Willy Brandt (1969-74) Helmut Schmidt (1974-76) |
| Predecessor: | Hans Katzer |
| Successor: | Herbert Ehrenberg |
| Office2: | Deputy Chairman of the SPD Parliamentary Group in the Bundestag |
| Term Start2: | 14 December 1976 |
| Term End2: | 4 November 1980 |
| Office3: | Member of the Bundestag |
| Term Start3: | 17 October 1961 |
| Term End3: | 4 November 1980 |
| Birth Date: | 1925 1, df=yes |
| Birth Place: | Heessen |
| Nationality: | German |
| Death Place: | Bornheim |
| Occupation: | Miner |
Walter Arendt (born 17 January 1925 in Heessen; died 7 March 2005 in Bornheim) was a German politician of the Social Democratic Party (SPD).
He was Federal Minister of Labour and Social Affairs of Germany from 1969 to 1976.
Since 1946 he was member of the SPD and member of the German Bundestag from 1961 to 1980.
Arendt was the son of a miner who died early from pneumoconiosis. This was one of his motives in his later strive to improve the situation of miners by enabling them to receive earlier pension.