Triple J Hottest 100, 2019

The 2019 Triple J Hottest 100 was announced on 25 January 2020. It is the 27th countdown of the most popular songs of the year, as chosen by listeners of Australian radio station triple j. A record-breaking number of votes (3.21 million) were cast by listeners choosing their top ten songs of 2019. This was the first Hottest 100 countdown to reach 3 million votes.

American singer-songwriter Billie Eilish was voted into first place with her single "bad guy". In doing so, she became the first female solo artist, and the youngest act (at 18 years old) to top a Hottest 100. Eilish also achieved the second most entries in the countdown, at five, second only to Wolfmother who had 6 in 2005. Australian artists G Flip and Lime Cordiale achieved four entires each.

A number of Hottest 100 records were also broken. Denzel Curry's cover of "Bulls on Parade" became the highest ranking Like a Version (and equal highest cover) in any Hottest 100. Slipknot's single "Unsainted" broke the record for the longest absence between countdowns, having last appeared 19 years prior with "Wait and Bleed" in the 2000 countdown.

Background
The triple j Hottest 100 allows members of the public to vote online for their top ten songs of the year, which are then used to calculate the year's 100 most popular songs. Any song initially released between 1 December 2018 and 30 November 2019 was eligible for 2019's Hottest 100.

Voting opened on 16 December 2019. Many artists and presenters made their votes public—out of 23 triple j presenters, the artists they voted for most often were Julia Jacklin, Sampa the Great, and Thelma Plum.

Projections
Prior to the countdown, three favourites had emerged by a significant margin. Bookmaker Beteasy and social media analysis project 100 Warm Tunas placed "Dance Monkey" by Australian musician Tones and I, "bad guy" by American singer-songwriter Billie Eilish, and American rapper Denzel Curry's cover of "Bulls on Parade" for Like a Version as the three songs most likely to take out first place.

2019 Triple J Album Poll
The annual triple j album poll was held across November and December and was announced on 15 December. Bold indicates Hottest 100 Winner.