| Games: | World Aquatics Championships |
| Nf: | LTU |
| Nfname: | Lietuvos plaukimo federacija |
| Year: | 2009 |
| Flagcaption: | Flag of Lithuania |
| Location: | Rome, Italy |
| Competitors: | 14 |
| Sports: | 2 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 1 |
| Rank: | 24th |
| Appearances: | auto |
| App Begin Year: | 1994 |
| See also: | (1978–1982) |
Lithuania competed at the 2009 World Aquatics Championships in Rome, Italy.
See main article: Diving at the 2009 World Aquatics Championships. Lithuania qualified 2 quota places for the following diving events.
| Athlete | Event | Preliminaries | Semifinal | Final | |||
|---|---|---|---|---|---|---|---|
| Points | Rank | Points | Rank | Points | Rank | ||
| align=left rowspan=2 | Ignas Barkauskas | align=left | 1 m springboard | 311.50 | 26 | did not advance | |
| align=left rowspan=2 | 3 m springboard | 314.65 | 43 | did not advance | |||
| Sergej Baziuk | 279.30 | 49 | did not advance | ||||
| Ignas Barkauskas Sergej Baziuk | 3 m synchro springboard | 327.42 | 19 | did not advance | |||
See main article: Swimming at the 2009 World Aquatics Championships. 12 swimmers represented Lithuania:[1]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Vaidotas Blažys | 50 m breaststroke | 28.52 | 57 | did not advance | |||
| 100 m breaststroke | 1:02.67 | 61 | did not advance | |||||
| align=left rowspan=4 | Vytautas Janušaitis | 50 m backstroke | 25.24 (NR) | 21 | did not advance | |||
| 100 m butterfly | 52.76 (NR) | 46 | did not advance | |||||
| 200 m individual medley | 2:00.32 | 19 | did not advance | |||||
| 400 m individual medley | 4:26.52 | 34 | did not advance | |||||
| Mindaugas Margis | 200 m individual medley | 2:06.99 | 54 | did not advance | ||||
| align=left rowspan=3 | Mindaugas Sadauskas | 50 m freestyle | 22.91 | 50 | did not advance | |||
| 100 m freestyle | 49.26 | 36 | did not advance | |||||
| 50 m backstroke | 26.71 | 55 | did not advance | |||||
| align=left rowspan=2 | Rimvydas Šalčius | 50 m butterfly | 24.92 | 79 | did not advance | |||
| 100 m butterfly | 53.20 | 58 | did not advance | |||||
| align=left rowspan=3 | Giedrius Titenis | 50 m breaststroke | 27.57 (NR) | 20 | did not advance | |||
| 100 m breaststroke | 59.24 (NR) | 4 | 59.43 | 6 | 59.27 | 6 | ||
| 200 m breaststroke | 2:09.28 | 7 | 2:08.35 | 5 | 2:07.80 (NR) | |||
| align=left rowspan=3 | Paulius Viktoravičius | 50 m freestyle | 22.55 | 35 | did not advance | |||
| 100 m freestyle | 48.84 (NR) | 27 | did not advance | |||||
| 50 m butterfly | 24.62 | 69 | did not advance | |||||
| Vytautas Janušaitis Paulius Viktoravičius Mindaugas Sadauskas Mindaugas Margis | 4 × 100 m freestyle relay | 3:16.47 (NR) | 14 | did not advance | ||||
| Vytautas Janušaitis Giedrius Titenis Rimvydas Šalčius Paulius Viktoravičius | 4 × 100 m medley relay | 3:35.40 (NR) | 15 | did not advance | ||||
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=4 | Gritė Apanavičiūtė | 50 m freestyle | 26.43 | 58 | did not advance | |||
| 100 m freestyle | 58.70 | 81 | did not advance | |||||
| 50 m butterfly | 28.38 | 62 | did not advance | |||||
| 100 m butterfly | 1:03.38 | 67 | did not advance | |||||
| align=left rowspan=5 | Aistė Dobrovolskaitė | 50 m freestyle | 2:08.47 | 61 | did not advance | |||
| 50 m butterfly | 28.62 | 65 | did not advance | |||||
| 100 m butterfly | 1:02.60 (NR) | 61 | did not advance | |||||
| 200 m butterfly | 2:22.48 | 48 | did not advance | |||||
| 200 m individual medley | 2:24.35 (NR) | 50 | did not advance | |||||
| align=left rowspan=3 | Raminta Dvariškytė | 50 m breaststroke | 32.53 | 44 | did not advance | |||
| 100 m breaststroke | 1:10.63 (NR) | 44 | did not advance | |||||
| 200 m breaststroke | 2:29.40 | 29 | ||||||
| align=left rowspan=3 | Urtė Kazakevičiūtė | 50 m breaststroke | 32.37 (NR) | 42 | did not advance | |||
| 100 m breaststroke | 1:12.24 | 59 | did not advance | |||||
| 200 m breaststroke | 2:28.13 (NR) | 25 | did not advance | |||||
| align=left rowspan=3 | Rugilė Mileišytė | 50 m freestyle | 26.48 | 60 | did not advance | |||
| 100 m freestyle | 57.30 | 62 | did not advance | |||||
| 50 m backstroke | 29.58 (NR) | 45 | did not advance | |||||
| Rugilė Mileišytė Gritė Apanavičiūtė Raminta Dvariškytė Aistė Dobrovolskaitė | 4 × 100 m freestyle relay | 3:54.97 (NR) | 23 | did not advance | ||||
| Rugilė Mileišytė (1:02.72 - NR) Raminta Dvariškytė Aistė Dobrovolskaitė Gritė Apanavičiūtė | 4 × 100 m medley relay | 4:12.30 (NR) | 22 | did not advance | ||||