Women's 4 × 100 metres relay at the 2019 IAAF World Relays
Venue	Nissan Stadium
Dates	11 May (heats) & 12 (final)
Nations	23
Winning time	43.27
Medalists
Mikiah Brisco Ashley Henderson Dezerea Bryant Aleia Hobbs    United States   Gayon Evans Natasha Morrison Sashalee Forbes Jonielle Smith Sherone Simpson*    Jamaica   Lisa Marie Kwayie Alexandra Burghardt Gina Lückenkemper Rebekka Haase Lisa Mayer*    Germany
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The women's 4 × 100 metres relay at the 2019 IAAF World Relays was held at the Nissan Stadium on 11 and 12 May.

Prior to the competition, the records were as follows:

World record	United States (Tianna Madison, Allyson Felix, Bianca Knight, Carmelita Jeter)	40.82	London, Great Britain	10 August 2012
Championship record	United States (Tianna Bartoletta, Alexandria Anderson, Jeneba Tarmoh, LaKeisha Lawson)	41.88	Nassau, Bahamas	24 May 2014
World Leading	University of Southern California	42.77	Los Angeles, United States	28 April 2019

Qualification: First 2 of each heat (Q) plus the 2 fastest times (q) advanced to the final.^[1][2]

Rank	Heat	Nation	Athletes	Time	Notes
1	1	United States	Mikiah Brisco, Ashley Henderson, Dezerea Bryant, Aleia Hobbs	42.51	Q, WL, *WC
2	3	Germany	Lisa Marie Kwayie, Lisa Mayer, Gina Lückenkemper, Rebekka Haase	43.03	Q, SB, *WC
3	1	Brazil	Andressa Fidelis, Lorraine Martins, Franciela Krasucki, Vitoria Cristina Rosa	43.07	Q, SB, *WC
4	3	Jamaica	Sherone Simpson, Natasha Morrison, Shashalee Forbes, Jonielle Smith	43.08	Q, SB, *WC
5	3	Australia	Sally Pearson, Maddie Coates, Riley Day, Naa Anang	43.19	q, SB, *WC
6	3	Italy	Johanelis Herrera Abreu, Gloria Hooper, Anna Bongiorni, Irene Siragusa	43.40	q, SB, *WC
7	1	Trinidad and Tobago	Kamaria Durant, Michelle-Lee Ahye, Reyare Thomas, Semoy Hackett	43.67	SB, *WC
8	3	Kazakhstan	Rima Kashafutdinova, Elina Mikhina, Svetlana Golendova, Olga Safronova	43.71	*WC
9	2	Denmark	Astrid Glenner-Frandsen, Ida Karstoft, Mette Graversgaard, Mathilde Kramer	43.90	Q, NR, *WC
10	3	Ireland	Ciara Neville, Gina Akpe-Moses, Rhasidat Adeleke, Patience Jumbo Gula	44.02	SB
11	2	Ghana	Flings Owusu-Agyapong, Gemma Acheampong, Persis William-Mensah, Halutie Hor	44.12	Q, SB, *WC
12	2	Thailand	On-Uma Chattha, Khanrutai Pakdee, Tassaporn Wannakit, Supawan Thipat	44.24
13	1	Japan	Anna Doi, Miku Yamada, Ichiko Iki, Naoka Miyake	44.24	SB
14	1	Ukraine	Hanna Plotitsyna, Hrystyna Stuy, Yana Kachur, Mariya Mokrova	44.55	SB
15	3	Czech Republic	Klára Seidlová, Marcela Pírková, Jana Slaninová, Lucie Domská	44.67	SB
16	3	Ecuador	Marina Poroso, Gabriela Suárez, Narcisa Landazuri, Ángela Tenorio	44.74	SB
17	2	Nigeria	Joy Udo-Gabriel, Patience Okon George, Favour Ofili, Rosemary Chukwuma	45.07	SB
	1	Poland	Kamila Ciba, Katarzyna Sokólska, Marika Popowicz-Drapała, Ewa Swoboda	DNF
	1	South Africa	Rose Xeyi, Tamzin Thomas, Justine Palframan, Tebogo Mamathu	DNF
	2	France	Maroussia Paré, Sarah Richard Mingas, Cynthia Leduc, Carolle Zahi	DNF
	2	Great Britain	Kristal Awuah, Desiree Henry, Ashleigh Nelson, Daryll Neita	DNF
	1	China	Liang Xiaojing, Wei Yongli, Kong Lingwei, Ge Manqi	DQ	R170.6(c)[3]
	2	Canada	Farah Jacques, Crystal Emmanuel, Shaina Harrison, Khamica Bingham	DQ	R170.7[4]

^[5]

Rank	Lane	Nation	Athletes	Time	Notes	Points
	5	United States	Mikiah Brisco, Ashley Henderson, Dezerea Bryant, Aleia Hobbs	43.27		8
	8	Jamaica	Gayon Evans, Natasha Morrison, Sashalee Forbes, Jonielle Smith	43.29		7
	7	Germany	Lisa Marie Kwayie, Alexandra Burghardt, Gina Lückenkemper, Rebekka Haase	43.68		6
4	6	Brazil	Ana Carolina Azevedo, Lorraine Martins, Franciela Krasucki, Vitoria Cristina Rosa	43.75		5
5	2	Italy	Johanelis Herrera Abreu, Gloria Hooper, Anna Bongiorni, Irene Siragusa	44.29		4
6	3	Australia	Sally Pearson, Nana Adoma Owusu-Afriyie, Riley Day, Naa Anang	44.62		3
7	9	Ghana	Flings Owusu-Agyapong, Gemma Acheampong, Persis William-Mensah, Halutie Hor	44.77		2
8	4	Denmark	Louise Østergaard, Astrid Glenner-Frandsen, Mette Graversgaard, Mathilde Kramer	45.32		1