The Mixed 4 × 100 metre freestyle relay competition at the 2024 World Aquatics Championships was held on 17 February 2024.

Records Prior to the competition, the existing world and championship records were as follows.

Results Heats The heats were started at 10:19.

Rank Heat Lane Nation Swimmers Time Notes 1 3 3 Wang Haoyu (48.28)Ji Xinjie (47.86)Yu Yiting (53.90)Ai Yanhan (54.43) 3:24.47 Q, AS 2 3 5 Finlay Knox (48.93)Javier Acevedo (47.98)Rebecca Smith (54.45)Taylor Ruck (53.42) 3:24.78 Q 3 3 4 Kai Taylor (48.73)Jack Cartwright (48.03)Alexandria Perkins (54.58)Abbey Harkin (53.96) 3:25.30 Q 4 2 5 Lorenzo Zazzeri (48.51)Manuel Frigo (48.62)Sofia Morini (54.66)Chiara Tarantino (54.27) 3:26.06 Q 5 2 4 Luke Hobson (48.50)Jack Aikins (48.92)Addison Sauickie (54.83)Kayla Han (56.51) 3:28.76 Q 6 3 6 Stan Pijnenburg (49.08)Thom de Boer (49.43)Milou van Wijk (55.48)Janna van Kooten (55.24) 3:29.23 Q 7 2 2 Matej Duša (49.23)Tibor Tistan (50.64)Lillian Slušná (55.92)Teresa Ivan (55.88) 3:31.67 Q 8 3 7 Lau Shiu Yue (52.30)Ian Ho (48.80)Camille Cheng (55.29)Tam Hoi Lam (55.80) 3:32.19 Q, NR 9 1 6 Jarod Hatch (51.65)Kayla Sanchez (55.08)Teia Salvino (57.21)Jerard Jacinto (52.59) 3:36.53 10 2 7 Dulyawat Kaewsriyong (50.28)Tonnam Kanteemool (50.88)Kamonchanok Kwanmuang (58.42)Jenjira Srisa-Ard (1:00.27) 3:39.85 11 3 8 Jesse Ssuubi Ssengonzi (52.07)Tendo Mukalazi (51.66)Kirabo Namutebi (1:00.28)Gloria Anna Muzito (56.34) 3:40.35 12 1 4 Monyo Maina (52.94)Ridhwan Mohamed (52.67)Imara Thorpe (59.28)Maria Brunlehner (57.39) 3:42.28 NR 13 2 1 Artur Barseghyan (50.41)Ashot Chakhoyan (54.78)Varsenik Manucharyan (1:00.30)Ani Poghosyan (58.80) 3:44.29 14 1 5 Anthony Piñeiro (52.72)María Alejandra Fernández (1:01.81)Alejandra Santana (1:02.82)Javier Núñez (50.82) 3:48.17 15 3 1 Lamar Taylor (53.19)Marvin Johnson (53.81)Victoria Russell (1:02.01)Rhanishka Gibbs (1:00.62) 3:49.63 16 2 8 Israel Poppe (54.12)James Hendrix (53.87)Amaya Bollinger (1:03.04)Mia Lee (1:01.26) 3:52.29 NR 17 1 3 Carolann Faeamani (1:04.46)Alan Uhi (55.76)Charissa Panuve (1:03.76)Finau Ohuafi (53.92) 3:57.90 18 3 0 Saud Ghali (55.27)Ahmed Theibich (56.98)Amani Al-Obaidli (1:01.65)Noor Yussuf Abdulla (1:04.01) 3:57.91 19 2 0 Tasi Limtiaco (55.01)Kestra Kihleng (1:05.27)Katerson Moya (57.81)Taeyanna Adams (1:07.22) 4:05.31 20 2 9 Mubal Azzam Ibrahim (57.69)Aishath Shaig (1:10.06)Hamna Ahmed (1:09.50)Mohamed Rihan Shiham (56.92) 4:14.17 2 3 Did not start 2 6 3 2

Final The final was held on 17 February at 20:45.

Rank Lane Nation Swimmers Time Notes 4 Pan Zhanle (47.29)Wang Haoyu (47.41)Li Bingjie (53.11)Yu Yiting (53.37) 3:21.18 AS 3 Kai Taylor (48.01)Jack Cartwright (47.90)Shayna Jack (52.38)Brianna Throssell (53.49) 3:21.78 2 Hunter Armstrong (47.83)Matt King (47.78)Claire Curzan (53.82)Kate Douglass (52.85) 3:22.28 4 5 Finlay Knox (48.79)Javier Acevedo (47.58)Taylor Ruck (53.28)Rebecca Smith (54.14) 3:23.79 5 6 Alessandro Miressi (48.06)Manuel Frigo (48.06)Sofia Morini (54.23)Chiara Tarantino (54.05) 3:24.40 6 7 Stan Pijnenburg (48.84)Caspar Corbeau (49.05)Kira Toussaint (54.51)Marrit Steenbergen (52.74) 3:25.14 7 8 Matej Duša (49.37)Tibor Tistan (50.32)Lillian Slušná (55.17)Teresa Ivan (55.02) 3:29.88 NR 8 1 Lau Shiu Yue (52.24)Ian Ho (48.66)Camille Cheng (54.71)Tam Hoi Lam (55.52) 3:31.13 NR

References