Masters M70 300 metres hurdles world record progression
This is the progression of world record improvements of the 300 metres hurdles M70 division of Masters athletics.
;Key:
Hand | Auto | Athlete | Nationality | Birthdate | Location | Date |
| 45.24 | Guido Müller | | 22.12.1938 | Vaterstetten | 10.07.2009 |
| 59.85 | Jack Greenwood | | 05.02.1926 | San Juan | 27.08.1983 |
| 49.07 | Earl Fee | | 22.03.1929 | Orlando | 28.08.1999 |
| 50.07 | Tor Trondset | | 16.11.1935 | Riccione | 04.09.2007 |
| 50.22 | James Stookey | | 20.01.1930 | San Diego | 17.08.2000 |
50.4 | | Albertus Van Zyl | | 13.08.1922 | | 17.04.1993 |
| 52.44 | Daniel Bulkley | | 04.05.1917 | Eugene | 03.08.1989 |
| 53.98 | Gilberto Gonzalez | | | Uniondale | 19.07.1986 |