The 2019 IAAF World Athletics Championships was the seventeenth edition of the biennial, global athletics competition organised by the International Association of Athletics Federations (IAAF), since renamed World Athletics. It was held between 27 September and 6 October 2019 in Doha, Qatar, at the renovated multi-purpose Khalifa International Stadium, but reduced to 21,000 available seats. 1,772 athletes from 206 teams competed in 49 athletics events over the ten-day competition, comprising 24 events each for men and women, plus a mixed relay. There were 43 track and field events, 4 racewalking events, and 2 marathon road running events. The racewalking and marathon events were held in Doha Corniche.
The 2019 Asian Athletics Championships was the 23rd edition of the Asian Athletics Championships. It was held from 21 to 24 April 2019 at the Khalifa International Stadium in Doha, Qatar. During the closing ceremony of the 22nd Asian Athletics Championships in Bhubaneswar India, President of Asian Athletics Association (AAA) Dahlan Al Hamad officially handed over the AAA Flag to Qatar Olympic Committee Secretary-General and Qatar Athletics Federation President Thani Abdulrahman Al Kuwari. The event was at the Khalifa International Stadium and it served as the test event for the 2019 World Athletics Championships which were held at the same venue.
Azerbaijan will compete at the 2019 World Athletics Championships in Doha, Qatar, from 27 September to 6 October 2019. Azerbaijan will be represented by 4 athletes.
Norway competed at the 2019 World Athletics Championships in Doha, Qatar, from 27 September to 6 October 2019.
Namibia competed at the 2019 World Athletics Championships in Doha, Qatar, from 27 September to 6 October 2019. The country's participation there marked its fifteenth appearance in the World Championships since its debut at the 1991 World Championships in Athletics. Namibia sent two athletes to the Championships, both of whom competed in the marathon events. Helalia Johannes became Namibia's first female medallist, and their first medallist in 26 years, when she won a bronze medal in the women's marathon. Tomas Hilifa Rainhold finished in 17th in the men's marathon.
Switzerland competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 31st place in the medal table.
Ecuador competed at the 2019 World Championships in Athletics in Doha, Qatar from 27 September to 6 October 2019. The country finished in 31st place in the medal table.
Portugal competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 27th place in the medal table.
Colombia competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 24th place in the medal table.
France competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 24th place in the medal table.
Venezuela competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 17th place in the medal table.
Qatar competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 16th place in the medal table.
Uganda competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019. The country finished in 9th place in the medal table.
Brazil competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019.
South Africa competed at the World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019.
Denmark competed at the 2019 World Championships in Athletics in Doha, Qatar from 27 September to 6 October 2019.
Latvia competed at the 2019 World Championships in Athletics in Doha, Qatar from 27 September to 6 October 2019.
Uzbekistan competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019.
Belarus competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019.
Uruguay competed at the 2019 World Athletics Championships in Doha, Qatar from 27 September to 6 October 2019.
