Smashproof is a male New Zealand hip hop/rap group. Smashproof consists of Young Sid, Tyree and Deach. The name "Smashproof" is a play on the word "Bulletproof".

They are best known for the song "Brother", in which they show their version of what is going on in South Auckland. It spent eleven consecutive weeks at number one on the New Zealand RIANZ singles chart in 2009. The song features singer Gin Wigmore.