AGTube Mashups are annual videos that compile many AGTube videos posted in a year. The first one was created by AmericanGirl077, and was a mashup of 2011's AGTube videos. Since then, different AGTubers have made their own and posted them. Typically, the videos consist of different AGTube videos, with the song in the background being a mashup of the popular songs of that year.
On January 1, 2012, AmericanGirl077 uploaded the first AGTube mashup titled "World Go Boom," after the song mashup she used for the video. The video became very popular, and inspired other AGTubers to continue it. On December 31, 2012, AGRainboots uploaded a mashup of 2012's AGTube videos, and AGTubers have been creating their own mashups since then.
- The only AGTuber so far to have created more than one mashup is AGLovestudiox.
- AmericanGirl077 mentioned possibly making one for 2012, but never did.
- The longest AGTube mashup was made by AGMusicProductions, at 7:20 long.