The 2018 Kansas City Royals season was their 50th season for the franchise, and their 46th at Kauffman Stadium.

They significantly failed to improve upon their 80–82 record the previous year, reaching 100+ losses for the first time since 2006 and finishing 58–104, the second-worst record in the 2018 MLB season, ahead of only the Baltimore Orioles, who finished 47–115.

Infielders Outfielders Coaches Note: G = Games played; AB = At bats; R = Runs; H = Hits; 2B = Doubles; 3B = Triples; HR = Home runs; RBI = Runs batted in; SB = Stolen bases; BB = Walks; AVG = Batting average; SLG = Slugging average Source:[1] Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; H = Hits allowed; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; SO = Strikeouts Source:[2]