Beau Walker (born 13 April 1985) is former junior Australian surfer who has represented Australia in national and international championships.

He is also known for his various hosting duties on the Nine Network (Channel Nine) programmes such as The Shak,[1] Mortified, Kitchen Whiz, and Pyramid, often using the moniker of 'Nitro'.

In high school, Walker balanced studies with commitments on the Pro Juniors circuit, winning numerous titles.

In February 2005, at the age of seventeen, Walker met board maker Cameron Bond who then designed a surfboard for him called the 'Nitro' model.

[4] While competing in a televised surfing competition, Walker was spotted by Nine Network and they decided he would be perfect to play the part of Nitro on the then new show The Shak.