Altenstadt an der Waldnaab (, , in contrast to "New Town on the Waldnaab") is a municipality in the district of Neustadt an der Waldnaab in Bavaria, Germany. It is situated on the river Waldnaab, southeast of Neustadt an der Waldnaab, and north of Weiden in der Oberpfalz. Bundesautobahn 93 (Regensburg - Hof) passes west of Altenstadt. It has a railway station on the Weiden–Oberkotzau railway.
thumb|left|City hall of Altenstadt a.d.WN