It depends what you are looking for:

Jewish Community for the provinces of Tyrol and Vorarlberg
http://www.ikg-innsbruck.at/home_en.php

Also helpfull will be:
http://www.jm-hohenems.at/
Jüdisches Museum Hohenems
Villa Heimann-Rosenthal
Schweizer Strasse 5, A-6845 Hohenems
Tel. 0043 (0)5576 73989-0
office@jm-hohenems.at

Wolf-Erich Eckstein
Vienna/AUSTRIA