| Games: | World Aquatics Championships |
| Nf: | NGR |
| Nfname: | Nigeria Aquatics Federation |
| Year: | 2019 |
| Flagcaption: | Flag of Nigeria |
| Location: | Gwangju, South Korea |
| Competitors: | 4 |
| Sports: | 1 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
Nigeria competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.
See main article: Swimming at the 2019 World Aquatics Championships.
Nigeria has entered four swimmers.[1]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Ifeakachuku Nmor | 50 m butterfly | 25.34 | 60 | Did not advance | |||
| 100 m butterfly | 57.65 | 63 | Did not advance | |||||
| align=left rowspan=2 | Yellow Yeiyah | 50 m freestyle | 24.81 | 90 | Did not advance | |||
| 100 m freestyle | 55.23 | 97 | Did not advance | |||||
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Chinelo Iyadi | 50 m breaststroke | 35.64 | 44 | Did not advance | |||
| 100 m breaststroke | 1:20.48 | 50 | Did not advance | |||||
| align=left rowspan=2 | Abiola Ogunbanwo | 100 m freestyle | 1:01.31 | 71 | Did not advance | |||
| 200 m freestyle | 2:15.44 | 51 | Did not advance | |||||
| Athlete | Event | Heat | Final | |||
|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | |||
| Ifeakachuku Nmor Chinelo Iyadi Abiola Ogunbanwo Yellow Yeiyah | 4 × 100 m mixed freestyle relay | Did not advance | ||||
| Ifeakachuku Nmor Chinelo Iyadi Abiola Ogunbanwo Yellow Yeiyah | 4 × 100 m mixed medley relay | 4:35.59 | 33 | Did not advance | ||