This page lists the World Best Year Performance in the year 2009 in both the men's and the women's hammer throw. The main event during this season were the 2009 World Athletics Championships in Berlin, Germany, where the final of the men's competition was held on August 17, 2009. The women had their final five days later, on August 22, 2009.
| Rank | Mark | Athlete | Venue | Date | Note | |
|---|---|---|---|---|---|---|
| 1 | 82.58 m | 2009-09-02 | NR | |||
| 2 | 81.43 m | Veszprém, Hungary | 2009-04-25 | |||
| 3 | 80.72 m | 2009-06-06 | PB | |||
| 4 | 80.14 m | 2009-05-30 | PB | |||
| 5 | 80.10 m | Bogatyr Adler, Russia | 2009-02-20 | |||
| 6 | 79.74 m | Campi Bisenzio, Italy | 2009-05-17 | |||
| 7 | 79.74 m | 2009-09-02 | PB | |||
| 8 | 79.69 m | 2009-07-22 | ||||
| 9 | 79.66 m | Puerto de la Cruz, Spain | 2009-03-15 | |||
| 10 | 79.48 m | 2009-06-06 | ||||
| 11 | 79.43 m | Leichlingen, Germany | 2009-07-26 | |||
| 12 | 79.30 m | 2009-08-17 | ||||
| 13 | 79.28 m | Uberlândia, Brazil | 2009-05-20 | |||
| 14 | 78.91 m | Castres, France | 2009-08-05 | |||
| 15 | 78.81 m | Castres, France | 2009-08-05 | |||
| 16 | 78.70 m | 2009-08-29 | ||||
| 17 | 78.36 m | Portland, Oregon, USA | 2009-09-06 | |||
| 18 | 78.19 m | 2009-08-01 | ||||
| 19 | 77.88 m | 2009-06-09 | PB | |||
| 20 | 77.65 m | 2009-08-31 | ||||
| 21 | 77.35 m | 2009-07-25 | ||||
| 22 | 77.11 m | 2009-06-06 | ||||
| 23 | 76.86 m | Princeton, New Jersey, United States | 2009-04-18 | |||
| 24 | 76.81 m | Amnéville, France | 2009-05-13 | |||
| 25 | 76.80 m | 2009-05-23 |
| Standing records prior to the 2009 season in track and field | |||||
|---|---|---|---|---|---|
| 77.80 m | August 15, 2006 |  Tallinn, Estonia | |||
| Standing records after the 2009 season in track and field | |||||
| 77.96 m | August 22, 2009 | Berlin, Germany | |||
| Rank | Mark | Athlete | Venue | Date | Note | |
|---|---|---|---|---|---|---|
| 1 | 77.96 m | 2009-08-22 | WR | |||
| 2 | 77.12 m | 2009-08-22 | PB | |||
| 3 | 76.90 m | 2009-05-16 | PB | |||
| 4 | 76.41 m | Cheboksary, Russia | 2009-07-25 | |||
| 5 | 76.32 m | 2009-08-01 | ||||
| 6 | 74.25 m | 2009-10-21 | ||||
| 7 | 74.23 m | 2009-08-22 | PB | |||
| 8 | 73.98 m | 2009-07-25 | ||||
| 9 | 73.90 m | 2009-06-18 | PB | |||
| 10 | 73.07 m | 2009-04-28 | ||||
| 11 | 72.86 m | 2009-06-06 | ||||
| 12 | 72.79 m | 2009-02-14 | ||||
| 13 | 72.71 m | Compiègne, France | 2009-02-28 | |||
| 14 | 72.54 m | 2009-06-16 | ||||
| 15 | 72.53 m | 2009-05-05 | ||||
| 16 | 72.21 m | 2009-08-20 | PB | |||
| 17 | 72.07 m | Eugene, Oregon, USA | 2009-06-07 | |||
| 18 | 71.67 m | Los Realejos, Spain | 2009-03-14 | PB | ||
| 19 | 71.66 m | 2009-03-06 | ||||
| 20 | 71.56 m | 2009-01-31 | ||||
| 21 | 71.54 m | 2009-06-13 | ||||
| 22 | 71.43 m | 2009-06-06 | ||||
| 23 | 70.82 m | 2009-05-23 | ||||
| 24 | 70.73 m | Thessaloniki, Greece | 2009-08-01 | PB | ||
| 25 | 70.66 m | 2009-04-25 |