| Liechtenstein Cup | |
| Year: | 2005–06 |
| Country: | Liechtenstein |
| Champions: | FC Vaduz |
| Runner-Up: | FC Balzers |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 Liechtenstein Cup was the sixty-first season of Liechtenstein's annual cup competition. Seven clubs competed with a total of sixteen teams for one spot in the first qualifying round of the UEFA Cup. Defending champions were FC Vaduz, who have won the cup continuously since 1998.
|colspan="3" style="background-color:#99CCCC; text-align:center;"|13 September 2005|-|colspan="3" style="background-color:#99CCCC; text-align:center;"|14 September 2005|}
|colspan="3" style="background-color:#99CCCC; text-align:center;"|18 October 2005|-|colspan="3" style="background-color:#99CCCC; text-align:center;"|19 October 2005|}
|colspan="3" style="background-color:#99CCCC; text-align:center;"|8 November 2005|-|colspan="3" style="background-color:#99CCCC; text-align:center;"|9 November 2005|}