The Stieber Twins are a duo from Heidelberg, Germany, consisting of the brothers Martin (Marshall Mar, a.k.a. Martin Jekyll) and Christian (Luxus Chris a.k.a. Christian Hyde). They are known as graffiti artists, breakdancers, rappers, hip hop producers and DJs.

The twins are active since ca. 1983, and produce hip hop music since 1992. Their first instrumental was on the album Alte Schule ("Old school"), the first songs that featured the twins rapping were "HipHop und Rap" ("HipHop and Rap") and "Allein zu zweit" ("Alone Together") and were released in 1995 on the album The Sound of MZEE. They are considered pioneers of German hip hop and their productions were ahead of the time and a formative influence.
Although they have only released one rap album, they are well respected in Germany because of and their lyrics critical of the hip hop business, spoken in distinctive Heidelberg accent.

They have worked with many German artists and have also collaborated with artists such as GZA of the Wu-Tang Clan, Prodigal Sunn of Sunz of Man and the Arsonists.