Tonny Brochmann Christiansen (born 11 August 1989) is a Danish footballer who plays as a midfielder. He has previously played for Horsens, Sogndal, Sandnes Ulf, Jerv, Stabæk and Mjøndalen.
Brochmann was born in Horsens and he started his career with Horsens in 2009.
Brochmann joined Sogndal in 2011. He made his debut for Sogndal in a 1-1 draw against VÃÂ¥lerenga.
Brochmann joined Jerv on 1 March 2016. He went on to score in his OBOS-ligaen debut when Jerv defeated Ranheim 2-1 at home stadium Levermyr on 3 April 2016.
Before the 2017 season Brochmann signed for Stabæk.
On the last day of the transfer window Brochmann signed for Mjøndalen.