Werner of Steusslingen (died 7 August 1078) was the archbishop of Magdeburg from 1063 until his death. His episcopate was dominated by the Investiture Contest. He was an ally of King Henry IV of Germany until 1073, when he joined the first Saxon revolt. Imprisoned in 1075 and released the following year, he joined the second Saxon revolt in 1077. He was killed at the battle of Mellrichstadt.