Altenboitzen is a village and today a village within the borough of Walsrode in Heidekreis district in the German state of Lower Saxony.

The village lies southwest of the town on the Lüneburg Heath.

The Jordanbach stream flows through Altenboitzen and continues in a southwesterly direction before discharging into the River Böhme.

Altenboitzen has no road names, only house numbers.

The municipal administrator (Ortsvorsteher) is Stephan Rengstorf.