↑ "Despacito" surpassed "See You Again" as the most liked video on July 25, 2017; first video to reach 20 million likes on August 30, 2017;[7] first video to reach 30 million likes on September 29, 2018; first video to reach 40 million likes on September 24, 2020; most viewed video on YouTube with over 7 billion views ข้อมูลเมื่อ ตุลาคม 2020[update].
↑ "See You Again" surpassed "Gangnam Style" as the most liked video on August 27, 2016; second video to reach 30 million likes on September 12, 2020.
↑ "Gangnam Style" surpassed "Party Rock Anthem" as the most liked video on September 13, 2012;[3] first video to reach 10 million likes on November 3, 2015.[14]
↑ "Baby" surpassed "Evolution of Dance" as the most liked video on July 6, 2011.[26][27]
↑ "Despacito" became the first video to reach 20 million likes on August 30, 2017;[7] first video to reach 30 million likes on September 29, 2018; first video to reach 40 million likes on September 24, 2020.
↑ "Gangnam Style" became the first video to reach 2 million likes on September 18, 2012,[43] 5 million likes on November 11, 2012,[44] and 10 million likes on November 3, 2015.[14]
↑ "Kony 2012" was a viral campaign by Invisible Children that aimed to raise support for Joseph Kony's arrest. In 12 days it became YouTube's most liked video, only to be surpassed by "Party Rock Anthem" 18 days later.
↑ "Party Rock Anthem" was the first video to reach 1 million likes on November 15, 2011.[50][51][52] It is the only video on this list to hold the No. 1 spot on more than one occasion.
↑ "Evolution of Dance" was YouTube's first video to hold the No. 1 spot on this list. When the video was uploaded in 2006, YouTube still used the 5-star rating system. On March 31, 2010, when the rating system changed to likes and dislikes, all previous 1 star ratings were converted to dislikes and all 5 star ratings were converted to likes. This automatically made "Evolution of Dance" YouTube's most liked video at the time.
