Swimming at the 2018 Summer Youth Olympics – Boys' 50 metre butterfly

The heats were started on 10 October at 10:00.[2]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	7	4	Andrei Minakov	Russia	23.50	Q
2	7	5	Kristóf Milák	Hungary	23.99	Q
3	6	5	Daniil Markov	Russia	24.00	Q
4	6	6	Shen Jiahao	China	24.15	Q
5	6	2	Thomas Ceccon	Italy	24.20	Q
5	6	4	Tomoe Zenimoto Hvas	Norway	24.20	Q
7	7	3	Noè Ponti	Switzerland	24.21	Q
8	5	5	Luca Nik Armbruster	Germany	24.30	Q
9	5	3	Federico Burdisso	Italy	24.39	Q
10	3	2	Artur Barseghyan	Armenia	24.42	Q
11	5	2	Abeiku Jackson	Ghana	24.44	Q
12	5	4	Abdelrahman Sameh	Egypt	24.45	Q
13	5	1	Ihor Troianovskyi	Ukraine	24.53	Q
13	7	2	Sergueï Comte	France	24.53	Q
15	4	1	Robin Hanson	Sweden	24.63	Q
16	6	6	Shinnosuke Ishikawa	Japan	24.64	Q
17	3	3	Nicholas Lim	Hong Kong	24.74
18	4	5	George Rațiu	Romania	24.75
19	4	6	Jakub Majerski	Poland	24.79
20	7	1	Denys Kesil	Ukraine	24.97
20	7	7	Ivan Shamshurin	Belarus	24.97
22	5	6	Gal Kordež	Slovenia	24.99
23	7	6	Jean-Marc Delices	France	25.04
24	4	2	Maurice Ingenrieth	Germany	25.08
25	2	7	Akalanka Peiris	Sri Lanka	25.18
26	3	4	Gal Cohen Groumi	Israel	25.20
26	4	4	Kael Yorke	Trinidad and Tobago	25.20
28	7	8	Guillermo Cruz	Mexico	25.24
29	4	3	Yousif Buarissh	Saudi Arabia	25.27
30	5	7	Tihomir Todorov	Bulgaria	25.33
31	6	7	Dominik Karačić	Croatia	25.35
32	6	1	Fatih Tahirović	Bosnia and Herzegovina	25.36
33	3	3	Benjamin Schnapp	Chile	25.42
34	3	5	Hendrik Duvenhage	South Africa	25.54
35	6	8	Jake Johnson	United States	25.63
36	4	8	Alex Ahtiainen	Estonia	25.66
37	5	8	Ong Jung Yi	Singapore	25.67
38	2	2	Jayhan Odlum-Smith	Saint Lucia	25.74
39	3	7	Kirill Shatskov	Kazakhstan	25.86
40	2	4	Joseph Jackson	Australia	25.89
41	3	1	Lleyton Martin	Antigua and Barbuda	25.93
42	2	3	Rudi Spiteri	Malta	26.13
43	2	5	Low Zheng Yong	Malaysia	26.24
44	2	6	Yael Touw Ngie Tjouw	Suriname	26.27
45	3	8	Matej Duša	Slovakia	26.35
45	4	7	Robbie Powell	Ireland	26.35
47	1	5	Ousmane Touré	Mali	28.32
48	1	3	Andrew Qumsieh	Palestine	29.53
49	1	4	Ismat Moani	Sudan	30.24
50	2	1	Bunna Poeuvpichra	Cambodia	30.93

The semifinals were started on 10 October at 19:00.[3]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	2	3	Thomas Ceccon	Italy	23.46	Q
2	2	4	Andrei Minakov	Russia	23.47	Q
3	2	5	Daniil Markov	Russia	23.77	Q
4	1	4	Kristóf Milák	Hungary	23.84	Q
5	1	3	Tomoe Zenimoto Hvas	Norway	24.07	Q
6	1	7	Abdelrahman Sameh	Egypt	24.15	Q
7	1	5	Shen Jiahao	China	24.29	Q
7	2	2	Federico Burdisso	Italy	24.29	Q
9	2	6	Noè Ponti	Switzerland	24.31
10	2	1	Ihor Troianovskyi	Ukraine	24.33
11	1	1	Sergueï Comte	France	24.38
12	1	2	Artur Barseghyan	Armenia	24.44
13	1	6	Luca Nik Armbruster	Germany	24.45
14	1	8	Shinnosuke Ishikawa	Japan	24.76
15	2	7	Abeiku Jackson	Ghana	24.90
16	2	8	Robin Hanson	Sweden	25.35

The final was held on 11 October at 18:48.[4]

Rank	Lane	Name	Nationality	Time	Notes
	5	Andrei Minakov	Russia	23.62
	2	Tomoe Zenimoto Hvas	Norway	23.63
	3	Daniil Markov	Russia	23.63
4	4	Thomas Ceccon	Italy	23.65
5	1	Shen Jiahao	China	23.83
6	7	Abdelrahman Sameh	Egypt	24.07
7	6	Kristóf Milák	Hungary	24.11
8	8	Federico Burdisso	Italy	24.25