Cacti Radio was an internet radio station that mostly broadcast prank phone calls. The station was active from 2010 to 2012. It was known for being the home of The Phone Show and Madhouse Live, but also featured other weekly live shows, such as The Fun Show and The Prank Show. When live shows weren't happening, the station played old prank calls and prank shows 24 hours a day. It also played a few comedy podcasts and music in between everything.

By 2011, Cacti Radio was also broadcasting it's shows on Ustream, which allowed video as well as audio.