2016 IAAF World U20 Championships – Women's 4 × 400 metres relay
The women's 4 × 100 metres relay event at the 2016 IAAF World U20 Championships was held at Zdzisław Krzyszkowiak Stadium on 23 and 24 July.
Medalists
Records
Results
Heats
Qualification: First 3 of each heat plus the 2 fastest times qualified for the final.| Rank | Heat | Nation | Athletes | Time | Notes |
| 1 | 2 | Stacey-Ann Williams, Tiffany James, Roneisha McGregor, Junelle Bromfield | 3:33.18 | Q, WU20L | |
| 2 | 1 | Hannah Waller, Karrington Winters, Syaira Richardson, Samantha Watson | 3:34.64 | Q | |
| 3 | 1 | Ivanna Avramchuk, Yana Kachur, Anastasiia Bryzgina, Dariya Stavnycha | 3:35.34 | Q, SB | |
| 4 | 1 | Nelly Schmidt, Hendrikje Richter, Jana Reinert, Hannah Mergenthaler | 3:35.47 | Q, SB | |
| 5 | 1 | Xahria Santiago, Jazz Shukla, Natassha McDonald, Victoria Tachinski | 3:35.47 | q, SB | |
| 6 | 1 | Lada Vondrová, Lucie Kruparová, Jana Slaviková, Zdenka Seidlová | 3:36.38 | q, NU20R | |
| 7 | 1 | Jessica Thornton, Olivia Cason, Molly Blakey, Sarah Billings | 3:37.83 | SB | |
| 8 | 2 | Rebecca Borga, Alessia Tirnetta, Eleonora Marchiando, Alice Mangione | 3:38.23 | Q, SB | |
| 8 | 2 | Natalia Węglarz, Karolina Łozowska, Katarzyna Martyna, Natalia Kaczmarek | 3:38.23 | Q, SB | |
| 10 | 2 | Tiasha Samaddar, V. Subha, Shaharbana Sidhique, Jisna Mathew | 3:45.07 | ||
| 11 | 2 | Léna Kandissounon, Anaïs Seiller, Julie Hounsinou, Sarah Mingas | 3:46.12 | SB | |
| 2 | Iman Isa Jassim, Marta Hirpato, Basirah Sharifa Nasir, Aminat Yusuf Jamal | R170.20 |
Final
| Rank | Nation | Athletes | Time | Notes |
| Lynna Irby, Anna Cockrell, Karrington Winters, Samantha Watson | 3:29.11 | WU20L | ||
| Shannon Kalawan, Tiffany James, Stacey-Ann Williams, Junelle Bromfield | 3:31.01 | SB | ||
| Xahria Santiago, Ashlan Best, Natassha McDonald, Victoria Tachinski | 3:32.25 | NU20R | ||
| 4 | Eileen Demes, Hendrikje Richter, Jana Reinert, Hannah Mergenthaler | 3:32.63 | SB | |
| 5 | Yana Kachur, Anastasiia Bryzgina, Dariya Stavnycha, Dzhois Koba | 3:33.95 | NU20R | |
| 6 | Katarzyna Martyna, Karolina Łozowska, Natalia Węglarz, Natalia Kaczmarek | 3:36.95 | SB | |
| 7 | Lada Vondrová, Lucie Kruparová, Jana Slaviková, Zdenka Seidlová | 3:37.36 | ||
| 8 | Alice Mangione, Rebecca Borga, Alessia Tirnetta, Eleonora Marchiando | 3:42.53 |