The 2011 IAAF Diamond League (also known as the 2011 Samsung Diamond League for sponsorship purposes) was the second edition of the Diamond League, an annual series of fourteen one-day track and field meetings. The series began on 6 May in Doha, Qatar and ended on 16 September in Brussels, Belgium.
A total of fourteen athletes were given Diamond League Ambassador status, with the intention of bringing attention to some of the sport's foremost competitors. There are seven male and seven female athletes, and the division between track and field specialists is also evenly divided.