| Lanzelin of Klettgau | |
| Count of Habsburg, Duke of Altenberg, Earl of Klettgau, Duke of Muri, Count of Sungdau | |
| Birth Date: | circa. 940 CE |
| Death Date: | 981 or 991 CE |
| Noble Family: | House of Habsburg |
| Issue: | |
| Father: | Guntram the Rich |
Lanzelin (c. 940-981/991) was a Germanic noble and was a distant ancestor of the House of Habsburg. His father,[1] Guntram the Rich, was a powerful nobleman. He married Liutgarda of Nellenburg (daughter of Eberhart III of Thurgau[2]) from whom he inherited part of his possessions in present-day Switzerland, whilst from his father he inherited the titles of Duke of Muri and Count of Sundgau.[3] He also possessed the titles of Duke of Altenburg and Count of Klettgau, and had lands in Alsace.
Several male children were born to him, amongst which are:
He also had a daughter, Ita von Habsburg.