Swimming at the 2018 Summer Youth Olympics – Girls' 50 metre backstroke

The heats were started on 10 October at 10:14.[2]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	4	4	Kaylee McKeown	Australia	28.17	Q
2	4	2	Ryan White	United States	28.46	Q
2	5	4	Daria Vaskina	Russia	28.46	Q
4	5	3	Tamara Frías	Spain	28.89	Q
5	4	3	Madison Broad	Canada	28.95	Q
6	4	5	Lila Touili	France	29.07	Q
7	3	2	Arina Baikova	Latvia	29.25	Q
8	3	4	Peng Xuwei	China	29.32	Q
9	3	5	Fernanda de Goeij	Brazil	29.33	Q
10	5	5	Anastasiya Shkurdai	Belarus	29.35	Q, WD
11	2	5	Natalie Kan	Hong Kong	29.39	Q
11	3	3	Laura Ilyés	Hungary	29.39	Q
13	4	6	Alena Semizhon	Belarus	29.43	Q
14	4	1	Taydé Sansores	Mexico	29.51	Q
15	4	7	Diana Nazarova	Kazakhstan	29.72	Q
16	3	6	Ingeborg Løyning	Norway	29.73	Q
17	5	2	Malene Rypestøl	Norway	29.77	Q
18	2	6	Maria Pessanha	Brazil	29.83
19	3	1	Kalia Antoniou	Cyprus	29.91
20	5	7	Chen Szu-chi	Chinese Taipei	30.02
21	2	2	Kristýna Štemberová	Czech Republic	30.04
22	2	4	Margaret Markvardt	Estonia	30.14
23	5	6	Mariella Venter	South Africa	30.15
24	3	7	Tatiana Salcuțan	Moldova	30.21
25	5	1	Nea-Amanda Heinola	Finland	30.27
26	3	8	Gina Galloway	New Zealand	30.31
27	4	8	Lucija Šulenta	Croatia	30.50
28	2	3	Madelyn Moore	Bermuda	30.59
29	2	7	Sara Junevik	Sweden	30.64
30	2	1	Mia Ann Phiri	Zambia	30.89
31	5	8	Karolina Jurczyk	Poland	31.00
32	1	7	Carolina Cermelli	Panama	31.18
33	2	8	Aaliyah Palestrini	Seychelles	32.11
34	1	1	Robyn Young	Eswatini	32.34
35	1	4	Ashley Chai	Brunei	33.19
36	1	5	Roylin Akiwo	Palau	34.84
37	1	3	Tayamika Chang'anamuno	Malawi	37.61
38	1	2	Nafissath Radji	Benin	37.89
39	1	6	Kayla Hepler	Marshall Islands	37.98

Kaylee McKeown, Youth Olympic Champion

The semifinals were started on 10 October at 18:05.[3]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	2	4	Kaylee McKeown	Australia	28.14	Q
2	2	5	Daria Vaskina	Russia	28.24	Q
3	1	4	Ryan White	United States	28.62	Q
4	2	3	Madison Broad	Canada	28.78	Q
5	1	3	Lila Touili	France	28.80	Q
6	1	1	Diana Nazarova	Kazakhstan	28.86	Q
7	2	2	Fernanda de Goeij	Brazil	28.91	Q
8	1	5	Tamara Frías	Spain	28.93	Q
9	1	2	Natalie Kan	Hong Kong	29.09
10	1	7	Alena Semizhon	Belarus	29.23
11	2	1	Taydé Sansores	Mexico	29.29
12	1	6	Peng Xuwei	China	29.49
13	2	8	Ingeborg Løyning	Norway	29.76
14	1	8	Malene Rypestøl	Norway	29.81
15	2	6	Arina Baikova	Latvia	29.86
16	2	7	Laura Ilyés	Hungary	30.05

The final was held on 11 October at 18:53.[4]

Rank	Lane	Name	Nationality	Time	Notes
	4	Kaylee McKeown	Australia	28.28
	5	Daria Vaskina	Russia	28.38
	2	Lila Touili	France	28.78
4	3	Ryan White	United States	28.86
5	1	Fernanda de Goeij	Brazil	28.91
6	8	Tamara Frías	Spain	29.01
7	6	Madison Broad	Canada	29.12
8	7	Diana Nazarova	Kazakhstan	29.55