The women's eight 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 final.

[2] The four fastest boats advanced to the A final.

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

Additional rankings were determined in the B final.