Austin Collins, going by the stage name Au5 (ā-yo̵̅o̅-fīv), is an American electronic dance music producer from New Jersey, USA.

In 2012 he teamed up with I.Y.F.F.E. and won the Seven Lions Official Remix contest on Beatport, with his remix of "Days to Come", which was released on Skrillex's OWSLA label. Au5 also collaborated with BT on the single "Partysaurus Overflow" for Walt Disney Records/Pixar, and was also featured with Matt Hales on BT's single "Surrounded", which made it to #2 on Beatport's dubstep chart. Alongside Bada and Fractal, Au5 contributed to the track "City Life" from BT's album A Song Across Wires, released on August 16, 2013 by Armada Music. On August 29, 2014, Au5 released his track "Snowblind" on Monstercat, featured on the compilation 019 - Endeavour and currently has over 5 million views on YouTube. Au5 has repeatedly made his way into Beatport's Top 10, spanning various genres by combining elements of electro house, progressive house, trance, and dubstep. He has collaborated with Fractal and I.Y.F.F.E multiple times.