List of Inkigayo Chart winners (2019)

The Inkigayo Chart is a music program record chart on Seoul Broadcasting System (SBS) that gives an award to the best-performing single of the week in South Korea. The chart measured digital performance in domestic online music services (5,500 points), social media via YouTube views (3,500 points), network on-air time (1,000 points), advanced viewer votes (500 points), and album sales (500 points) in its ranking methodology throughout January 2019. Beginning on February 3, Inkigayo implemented modifications for its measurements of albums (up to 1,000 points) and social media (down to 3,000 points). Songs that spend three weeks at number one are awarded a Triple Crown and are removed from the chart and ineligible to win again. Seventeen member Mingyu and DIA member Jung Chae-yeon had hosted the show together since November 11, 2018. Chae-yeon was later replaced by actress Shin Eun-soo starting the February 17 broadcast. Mingyu and Eun-soo continued to host the show together till October 6, 2019, when they were replaced by Monsta X member Lee Min-hyuk, NCT member Jaehyun and April member Lee Na-eun.

In 2019, 36 singles ranked number one on the chart and 28 music acts received award trophies for this feat. Four songs collected trophies for three weeks and earned a Triple Crown: Itzy's "Dalla Dalla", BTS's "Boy with Luv", IU's "Blueming", and Mamamoo's "Hip". BTS accumulated a perfect score on the April 28 broadcast of Inkigayo with "Boy with Luv" when the song scored 11,000 points. Eight artists ranked more than one single at number one in 2019. The chart began the year with "Millions" by Winner retaining the top spot from the final chart of 2018. The following week, former I.O.I member Chungha ranked number one on the chart for the first time with her single "Gotta Go". She went on to achieve her second number one single on the July 7 broadcast with "Snapping". Two other soloist had more than one number one single in 2019. Singer Taeyeon had two singles rank number one on the chart in 2019; "Four Seasons" in April and "Spark" in November. IU had two singles rank at number one achieved with "Love Poem" and "Blueming". The latter of which went on to achieve a triple crown in December. Girl group Itzy achieved their first ever number one on the chart with their debut single "Dalla Dalla". Their succeeding single "Icy" went on to rank number one for two weeks in August. Both singles spent a total of 5 weeks atop the chart, making Itzy the artist with the most weeks at number one in 2019. In attaining their third win with "Hip", Mamamoo collected their second Triple Crown on the television series. They previously accomplished the distinction the previous year with "Starry Night". Their single "Gogobebe" also ranked number one on the March 31 broadcast. The other artists to rank more than one single at number one were GFriend with "Sunrise" and "Fever", Twice with "Fancy" and "Feel Special", and Red Velvet with "Zimzalabim" and "Umpah Umpah".

Besides Chungha and Itzy, eight other artists achieved their first Inkigayo award in 2019. Oh My Girl won their first music award on a public broadcasting network with "Bungee" on SBS. It marked the record among girl groups for the longest span between their debut and the achievement at 1,581 days. Woody's "Fire Up" and Kim Na-young's "To Be Honest" claimed the soloists their first wins on the program. X1, formed through the and fourth seasons of Produce 101 gained their first number one on the chart with their debut single "Flash" September 8. The group went on to disband in January 2023 due to the Mnet vote manipulation investigation. Boy group N.Flying achieved their first ever Inkigayo award on March 17 for their single "Rooftop". Other first time number ones on the chart include Seventeen with "Home" in February and NU'EST with "Love Me" in November.