Yukiko Sedlmajer,^[1] formerly Yukiko Kawasaki (川崎 由紀子, Kawasaki Yukiko, born July 31, 1977) is a Japanese former competitive figure skater who competed in both singles and pair skating. As a pair skater, she competed with Alexei Tikhonov for Japan.^[2] They are two-time Japanese national champions and won the bronze medal at the 1993 NHK Trophy. As a single skater, she competed internationally on the junior and senior levels.

Kawasaki turned professional in 2000. She performed in shows as a single skater and in an adagio team with her husband, Czech pair skater Marek Sedlmajer.^[3] After coaching at SKK Ostrov, Sporting Ghiaccio Artistico Pinzolo (Italy), Cristal Sapporo (Japan) and ASK Lovosice, she joined the coaching staff at Stadion Brno, in 2019.^[1]