Ralph Dale Earnhardt Jr. (born October 10, 1974), also known as "Dale Jr" or simply "Junior", is an American professional stock car racing driver, team owner, broadcaster for Amazon Prime Video and TNT Sports, and podcaster. A third-generation driver, he is the son of the late 7-time NASCAR Cup Series champion Dale Earnhardt and relative to many former and current drivers in the NASCAR ranks. Since retiring from full-time competition after the 2017 NASCAR Cup Series season, he has competed in select NASCAR Xfinity Series and CARS Late Model Stock Tour races, driving for JR Motorsports, a team of which he is a founder and co-owner of and which bears his namesake.

He became a color commentator for NASCAR on NBC in 2018 after retiring from driving full-time in NASCAR. After his contract with NBC expired after the 2023 season, he left for Amazon Prime Video and TNT Sports as part of new NASCAR coverage in NASCAR's next TV contract that began in 2025.

Earnhardt Jr. drove the No. 8 Budweiser-sponsored Chevrolet for Dale Earnhardt, Inc. (DEI), his father's team in the NASCAR Cup Series, from his debut in 1999 until 2007. In 2008, he moved to Hendrick Motorsports to drive their No. 88 car. He remained with Hendrick until his last season as a full-time driver in 2017. Earnhardt has 26 wins in the Cup Series, a total that ranks him tied (with Fred Lorenzen) for 33rd in NASCAR history as of April 2026. He is a two-time champion of the O'Reilly Auto Parts Series, winning in 1998 and 1999 when the series was known as the Busch Series.

Earnhardt's success at Daytona International Speedway and Talladega Superspeedway throughout his career earned him the nickname "the Pied Piper". He is a two-time Daytona 500 winner (2004 and 2014), and won NASCAR's Most Popular Driver Award fifteen consecutive times from 2003 to 2017.

Dale Earnhardt Jr. was born and raised in Kannapolis, North Carolina, the son of Brenda Lorraine Jackson and Dale Earnhardt. His maternal grandfather, Robert Gee Sr., was a NASCAR car builder. He has an elder sister, Kelley; an elder half-brother, Kerry, from his father's first marriage; and a younger half-sister, Taylor Earnhardt-Putnam, from his father's third marriage. He is of part German ancestry. His parents divorced shortly after he was born, and he and Kelley lived with Brenda Earnhardt until their house was destroyed in a fire when he was six years old. As Brenda had no financial support after the fire, she gave up custody of the two children to Earnhardt Sr. prior to his marriage to Teresa Houston. During Dale Earnhardt Jr.'s childhood, Kelley took care of him while their father and stepmother were busy with the race seasons. At the age of twelve, he was sent to Oak Ridge Military Academy; three weeks later, Kelley quit high school to join him. He considered remaining at Oak Ridge for his senior year, but instead decided to attend Mooresville High School, from which he graduated in 1992.

Earnhardt Jr. attended the high performance driving school run by Andy Hillenburg and began his racing career at the late age of 17 with his father, competing in the Street Stock division at Concord, North Carolina's Motorsport Park. His first race car was a 1979 Monte Carlo that he co-owned with Kerry. By the age of nineteen, after two seasons of driving Street Stock Division, Earnhardt Jr. had honed his driving abilities to the point of joining the Late Model Stock Car Division. He competed on the North and South Carolina short tracks, driving a No. 3 Buick. While he did run various tracks during this time, Earnhardt Jr. primarily focused his efforts at the Myrtle Beach Speedway in South Carolina and the East Carolina Motor Speedway in Robersonville, North Carolina, where he captured the pole for the Greenville Merchants 300 on October 28, 1994. There, he developed an in-depth knowledge of chassis setup and car preparation, while racing against his siblings. He worked at his father's dealership as a mechanic while he went to Mitchell Community College to earn an associate degree in automotive technology.

Earnhardt Jr. ran nine Busch Series races between 1996 and 1997 for Dale Earnhardt, Inc., and Ed Whitaker, respectively, before driving for his father's team in the Busch Series full-time in 1998, in which he started the season with an amazing blow over after contact with Dick Trickle and Buckshot Jones at Daytona, on the same weekend that his father had his first and only Daytona 500 win. Earnhardt won consecutive NASCAR Busch Series Championships in 1998 and 1999, barely edging Matt Kenseth. In 1998, he made his first start in the Winston Cup Series, at the exhibition race held at the Twin Ring Motegi in Japan. Also in 1999, he drove in five Winston Cup races in the No. 8 Budweiser Chevrolet for DEI in preparation for a full-time Cup Series ride in 2000, with his best finish being a tenth place finish in at Richmond in the fall race.

The 2000 season was Earnhardt's breakout year in the Winston Cup Series. He competed for the Raybestos NASCAR Rookie of the Year Award in 2000. His primary competitor for the award was Matt Kenseth. Kenseth outran Earnhardt in the season-opening Daytona 500. Earnhardt scored his first win in the DirecTV 500 at Texas Motor Speedway, breaking the record held by his father Earnhardt Sr. for the fewest starts by a driver to earn his first victory in NASCAR's "modern era" by winning in his twelfth start, and also at Richmond International Raceway. He became the first rookie to win The Winston.