The Diamond League is an annual series of elite track and field athletic competitions comprising fifteen invitational athletics meetings. The series sits in the top tier of the World Athletics one-day meet competitions.

The inaugural season was in 2010. It was designed to replace the IAAF Golden League, which had been held annually since 1998. The full sponsorship name is the Wanda Diamond League, the result of an agreement with Wanda Group that was announced in December 2019.

While the Golden League was formed to increase the profile of the leading European athletics competitions, the Diamond League's aim is to "enhance the worldwide appeal of athletics by going outside Europe for the first time." In addition to the original Golden League members (except Berlin) and other traditional European competitions, the series now includes events in China, Qatar, Morocco, and the United States.

Beginning in March 2022, after the 2022 Russian invasion of Ukraine, the Diamond League excluded Russian and Belarusian athletes from all of its track and field meetings.

The number in the table represents the order in which the meeting took place.

The original Diamond League scoring system, used from 2010 to 2015, awarded points to the top three athletes at each meeting (4 points for first place; 2 points for second place; 1 point for third place). Each of the thirty-two disciplines (sixteen each for male and female athletes) was staged a total of seven times during the season; points scored in the final meeting for that discipline (either Zürich or Brussels) were doubled. The athletes who finished the season with the highest number of points in their discipline won the "Diamond Race"; in case of a tie on points, the number of victories was used as the first tie-breaker, followed by the results of the final. Only athletes who competed in their discipline's final meeting were eligible to win the Diamond Race. In 2016 scoring was expanded to the top six (10–6–4–3–2–1); double points (20–12–8–6–4–2) were still awarded in the event finals.

A completely new system was introduced in 2017; the top eight athletes at each meeting are now awarded points (8–7–6–5–4–3–2–1), but these points only determine which athletes qualify for the discipline finals in Zürich and Brussels. The athletes who win at the finals are declared IAAF Diamond League Champions, and the allocation of the overall prize money is likewise determined solely by the results of the final. This system, with the winner of the final automatically winning the overall championship, is similar to the former IAAF Grand Prix circuit with its Grand Prix Final. As part of the scoring changes, the term 'Diamond Race' is no longer used. Instead, athletes compete in 'Diamond Disciplines' to become the Diamond League champion.

After the 2019 season, the final format changed from being held by two separate meets to one meet.