2019 Quaker State 400

{{Use mdy dates|date=February 2025}}

{{Infobox NASCAR race report

| Type = NASME

| Description =

| Race_Name = Quaker State 400

| Details ref = {{cite web|title=2019 schedule|url=https://www.nascar.com/monster-energy-nascar-cup-series/2019/schedule/|website=NASCAR.com|publisher=NASCAR Media Group, LLC.|access-date=June 9, 2019|date=May 5, 2018}}{{cite web|title=Kentucky Speedway|url=http://www.nascar.com/en_us/nascar-tracks/kentucky-speedway.html|website=NASCAR.com|publisher=NASCAR Media Group, LLC.|access-date=June 9, 2019|date=January 3, 2013|archive-date=April 28, 2017|archive-url=https://web.archive.org/web/20170428042510/http://www.nascar.com/en_us/nascar-tracks/kentucky-speedway.html|url-status=dead}}{{cite web|title=Entry List|url=https://www.mrn.com/2019/07/09/quaker-state-400-entry-list-2019-kentucky/|website=MRN.com|publisher=Motor Racing Network|access-date=July 9, 2019|date=July 9, 2019}}{{cite web|title=First Practice Results|url=https://www.mrn.com/2019/07/12/quaker-state-400-first-practice-speeds-kentucky/|website=MRN.com|publisher=Motor Racing Network|access-date=July 12, 2019|date=July 12, 2019}}{{cite web|title=Final Practice Results|url=https://www.mrn.com/2019/07/12/quaker-state-400-final-practice-speeds-kentucky/|website=MRN.com|publisher=Motor Racing Network|access-date=July 12, 2019|date=July 12, 2019}}{{cite web|title=Starting Lineup|url=https://www.mrn.com/2019/07/12/quaker-state-400-starting-lineup-kentucky/|website=MRN.com|publisher=Motor Racing Network|access-date=July 12, 2019|date=July 12, 2019}}{{cite web|title=Quaker State 400 Results|url=https://www.mrn.com/2019/07/13/quaker-state-400-results-kentucky-2019/|website=MRN.com|publisher=Motor Racing Network|access-date=July 13, 2019|date=July 13, 2019}}{{cite web|title=Points standings|url=https://www.jayski.com/wp-content/uploads/sites/31/2019/07/2019-19cup-points.pdf|website=Jayski.com|publisher=Jayski's Silly Season Site|access-date=July 13, 2019|date=July 13, 2019}}

| Fulldate = {{Start date|2019|07|13}}

| Year = 2019

| Race_No = 19

| Season_No = 36

| Image =2019_Quaker_State_400_program_cover.jpeg

| Caption =The 2019 Quaker State 400 program cover.

| Location = Kentucky Speedway in Sparta, Kentucky

| Course_mi = 1.5

| Course_km = 2.4

| Distance_laps = 269

| Distance_mi = 403.5

| Distance_km = 645.6

| Scheduled_laps = 267

| Scheduled_mi = 400.5

| Scheduled_km = 640.8

| Weather =

| Avg = {{convert|141.07|mph|km/h}}

| Pole_Driver = Daniel Suárez

| Pole_Team = Stewart-Haas Racing

| Pole_Time = 29.254

| Most_Driver = Kyle Busch

| Most_Team = Joe Gibbs Racing

| Most_laps = 72

| Car = 1

| First_Driver = Kurt Busch

| First_Team = Chip Ganassi Racing

| Network = NBCSN

| Announcers = Rick Allen, Jeff Burton, Steve Letarte and Dale Earnhardt Jr.

| Ratings = 2.075 million{{cite web|title=Quaker State 400 ratings|url=http://www.showbuzzdaily.com/articles/skedball-weekly-sports-tv-ratings-7-8-7-14-2019.html|archive-url=https://web.archive.org/web/20190716142042/http://www.showbuzzdaily.com/articles/skedball-weekly-sports-tv-ratings-7-8-7-14-2019.html|url-status=dead|archive-date=16 July 2019|website=ShowBuzzDaily|publisher=Mitch Metcalf|access-date=16 July 2019}}

| Radio = PRN

| Booth_Ann = Doug Rice and Mark Garrow

| Turn_Ann = Doug Turnbull (1 & 2) and Pat Patterson (3 & 4)

}}

The 2019 Quaker State 400 presented by Walmart was a Monster Energy NASCAR Cup Series race held on July 13, 2019 at Kentucky Speedway in Sparta, Kentucky. Contested over 269 laps—extended from 267 laps due to an overtime finish, on the {{convert|1.5|mi|km|adj=on}} speedway, it was the 19th race of the 2019 Monster Energy NASCAR Cup Series season. The race saw an amazing finish between brothers Kurt Busch and Kyle Busch as Kurt would hold off his younger brother to win the race.