Christiaan Rudolph Liebenberg (born 18 December 1981) is a former South African rugby union footballer who played as a hooker. He started his career at the Natal Sharks in 2002 before joining Griquas the following year. He made 64 appearances for the Kimberley-based side between 2003 and 2006 and also played Super Rugby for the Cheetahs in 2006. He then played the remainder of his career in Cape Town, where he played domestic rugby for Western Province and Super Rugby for the Stormers. He also had a short spell at French Top 14 side Toulon in 2009.
He made his international debut for South Africa on 1 December 2007 against the Barbarians in London, aged 25. He then came up as replacement hooker against Australia in Perth on 8 September 2012 and as replacement hooker the following week against New Zealand in Dunedin, where South Africa lost by 10 points. He made a total of five test appearances for South Africa, plus the one tour match against the Barbarians.
He retired after the 2014 Currie Cup season.