The 2017 World Figure Skating Championships were held 29 March – 2 April 2017 in Helsinki, Finland. The host was named in June 2014. Medals were awarded in the disciplines of men's singles, ladies' singles, pairs, and ice dancing. The event also determined the number of entries for each country at the 2018 World Championships and the 2018 Winter Olympics.

Hartwall Arena's main arena, with an ice surface measuring 60 m x 30 m, was used for all competitions and several practice sessions. The rest of the practice sessions took place at Hartwall Arena's practice rink (58 m x 28 m) and Pirkkola ice rink (for pairs, 60 m x 30 m). Hartwall Arena's main rink and practice rink facilities are in the same venue. Pirkkola practice rink is about four kilometres from Hartwall Arena.

The following new ISU best scores were set during this competition:

Participants were required to have attained minimum technical element scores at an earlier senior international competition. The scores had to be obtained at least 21 days before the first official practice day of the championships.

Based on the results of the 2016 World Championships, each ISU member nation was allowed to field one to three entries per discipline.

Countries began publishing their selections as early as December 2016. The International Skating Union published a complete list on 9 March 2017.

Yuzuru Hanyu set a new world record for the free skating (223.20 points).

Evgenia Medvedeva set a new world record for the free skating (154.40 points) and for the combined total (233.41 points).