The country's only professional team are in an exceptional position: Vaduz participate in the league system of neighbouring Switzerland, but can only get into Europe via Liechtenstein's domestic cup.
"We are really in a special situation," club president Patrick Burgmeier told AFP.
There are well-known major football clubs competing in the leagues of neighbouring countries, such as Cardiff or Monaco.
The Principality of Liechtenstein, population 39,000, is wedged between Switzerland and Austria. Its 160 square kilometres comprise a sliver of flat land beside the River Rhine and towering Alpine mountains.
There are only seven football clubs in the wealthy German-speaking microstate. Founded in 1932, Vaduz are in the Challenge League, the Swiss second division, with the others at levels four to seven in the Swiss pyramid.
Serial winners of the Liechtenstein Cup -- their 48 cup titles constitute a world record -- Vaduz first played in European competition in 1992.