Johann Georg Hasler (7 November 1826 â 13 February 1883) was a politician from Liechtenstein who served in the Landtag of Liechtenstein from 1877 to 1878. He previously served as mayor of Eschen from 1876 to 1879.
From 1864 to 1867 and again from 1873 to 1876 he was the municipal treasurer of Eschen. He resigned his seat in the Landtag following the coinage crisis in 1878.