Most listings are in the Swiss directories.
Country code: +423
Official Swisscom White Pages telephone directories for Switzerland (and Liechtenstein). Includes reverse search. Also in Italian, German and French.
Official Swisscom Yellow Pages for Switzerland (and Liechtenstein). Search by name, classification, keyword etc. Click on advanced search for reverse search and other searches.
Business directory for Liechtenstein in English, German, Spanish, French and Italian.