Determining the single most viewed Indian Premier League (IPL) highlight on YouTube is challenging due to the vast number of videos and the dynamic nature of view counts. However, several IPL-related videos have garnered significant attention over time. For instance, highlights of the IPL 2016 final between Royal Challengers Bangalore (RCB) and Sunrisers Hyderabad (SRH) have been particularly popular among viewers. YouTube
Additionally, the official IPL YouTube channel regularly uploads match highlights and has amassed a substantial following, contributing to high view counts across its videos.
It's important to note that viewership figures are continually changing, and newer videos may surpass older ones in popularity over time.