This page lists the World Best Year Performance in the year 1999 in both the men's and the women's hammer throw. The main event during this season were the 1999 World Athletics Championships in Seville, Spain, where the final of the men's competition was held on Sunday August 22, 1999. The women had their final two days later, on Tuesday August 24, 1999.
| Rank | Mark | Athlete | Venue | Date | Note | |
|---|---|---|---|---|---|---|
| 1 | 82.78 m | 1999-06-26 | PB | |||
| 2 | 82.57 m | Clermont-Ferrand, France | 1999-05-13 | |||
| 3 | 81.73 m | 1999-08-07 | ||||
| 4 | 81.56 m | Veszprém, Hungary | 1999-08-14 | PB | ||
| 5 | 81.28 m | 1999-09-25 | NR | |||
| 6 | 80.98 m | Pescara, Italy | 1999-07-04 | PB | ||
| 7 | 80.87 m | Veszprém, Hungary | 1999-08-14 | |||
| 8 | 80.75 m | 1999-07-25 | ||||
| 9 | 80.51 m | 1999-07-31 | ||||
| 10 | 80.35 m | Eugene, Oregon, United States | 1999-06-25 | |||
| 11 | 80.12 m | 1999-08-03 | ||||
| 12 | 80.00 m | 1999-05-14 | ||||
| 13 | 79.95 m | Togliattigrad, Russia | 1999-05-15 | |||
| 14 | 79.83 m | 1999-07-10 | ||||
| 15 | 79.81 m | Clermont-Ferrand, France | 1999-09-19 | |||
| 16 | 79.59 m | Padua, Italy | 1999-06-26 | |||
| 17 | 79.55 m | 1999-06-04 | ||||
| 18 | 79.48 m | Königs Wusterhausen, Germany | 1999-09-05 | |||
| 19 | 79.26 m | Eugene, Oregon, United States | 1999-05-30 | PB | ||
| 20 | 79.17 m | 1999-10-24 | ||||
| 21 | 79.08 m | 1999-05-26 | PB | |||
| 22 | 79.01 m | 1999-10-02 | ||||
| 23 | 78.88 m | 1999-08-01 | ||||
| 24 | 78.82 m | Rüdlingen, Switzerland | 1999-08-28 | |||
| 25 | 78.70 m | 1999-02-08 | PB |
| Standing records prior to the 1999 season in track and field | |||||
|---|---|---|---|---|---|
| 73.14 m | July 16, 1998 | Poiana Brasov, Romania | |||
| Standing records after to the 1999 season in track and field | |||||
| 76.07 m | August 29, 1999 | Rüdlingen, Switzerland | |||
| Rank | Mark | Athlete | Venue | Date | Note | |
|---|---|---|---|---|---|---|
| 1 | 76.07 m | Rüdlingen, Switzerland | 1999-08-29 | WR | ||
| 2 | 74.30 m | 1999-06-04 | ||||
| 3 | 72.09 m | 1999-06-04 | PB | |||
| 4 | 70.16 m | Laramie, Wyoming, United States | 1999-05-15 | |||
| 5 | 68.40 m | 1999-09-25 | PB | |||
| 6 | 68.27 m | 1999-07-09 | PB | |||
| 7 | 68.21 m | 1999-07-16 | ||||
| 8 | 68.11 m | 1999-07-09 | ||||
| 9 | 67.64 m | Rüdlingen, Switzerland | 1999-08-28 | |||
| 10 | 67.24 m | Logan, Utah, United States | 1999-05-29 | |||
| 11 | 67.13 m | Halle, Germany | 1999-05-15 | |||
| 12 | 67.10 m | 1999-08-09 | ||||
| 13 | 67.00 m | Philadelphia, United States | 1999-04-24 | |||
| 14 | 66.78 m | 1999-03-13 | ||||
| 15 | 66.62 m | 1999-06-12 | ||||
| 16 | 66.30 m | Mannheim, Germany | 1999-06-18 | |||
| 17 | 66.13 m | Denton, Texas, United States | 1999-05-08 | |||
| 18 | 66.08 m | Nuremberg, Germany | 1999-06-13 | |||
| 19 | 66.06 m | 1999-06-04 | ||||
| 20 | 65.93 m | 1999-05-02 | ||||
| 21 | 65.39 m | Castres, France | 1999-08-08 | PB | ||
| 22 | 65.10 m | 1999-06-19 | ||||
| 23 | 64.94 m | Seward, NE, United States | 1999-05-12 | |||
| 24 | 64.81 m | 1999-05-14 | ||||
| 25 | 64.72 m | Princeton, United States | 1999-05-08 |