To watch the UEFA Champions League (UCL) online, the streaming options depend on your location. In the United States, you can watch UCL on CBS Sports and Univision. In the UK, BT Sport is the broadcaster, while in Canada, it's available on DAZN. In Australia, Optus Sport covers the UCL, and in India, it broadcasts on SonyLIV. Always check the official websites or apps for the latest information on where to watch the UCL in your region.