The women's single sculls competition at the 2018 World Rowing Championships in Plovdiv took place at the Plovdiv Regatta Venue.

[1] The schedule was as follows:[1] All times are Eastern European Summer Time (UTC+3) Heat winners advanced directly to the A/B semifinals.

[2] The two fastest boats in each repechage advanced to the A/B semifinals.

[4] The three fastest boats in each semi advanced to the A final.

[4] The A final determined the rankings for places 1 to 6.