This is the progression of world record improvements of the 3000 metres M45 division of Masters athletics. Records must be set in properly conducted, official competitions under the standing IAAF rules unless modified by World Masters Athletics.The M45 division consists of male athletes who have reached the age of 45 but have not yet reached the age of 50, so exactly from their 45th birthday to the day before their 50th birthday.
| Hand | Auto | Athlete | Nationality | Birthdate | Location | Date |
|---|---|---|---|---|---|---|
| 9:47.4 | Derek Turnbull | 05 December 1926 | Christchurch | 08 February 1992 | ||
| 11:30.47 | Pietro Nasi | 11 December 1917 | Turin | 18 March 1984 | ||