Alois I (1759‑1805) was Prince of Liechtenstein from 1781 untill his death. He was the first-born son of Franz Josef I.

Alois was enlisted in the military as a youth but withdrew due to poor health. His great interest was forestry and gardening and had many trees from overseas planted around his manors for both economic and aesthetic reasons. He also decorated Eisgrub Park with ornamental buildings. Alois I supported mining operations within his lands in Moravia in order to raise money. This included the construction of an ironworks at Olmutz.

Alois I also expanded the Liechtenstein library through the purchase of complete collections of books. Alois I had the architect Joseph Hardtmuth design a new palace in Herrengasse, Vienna. He hired a seasonal theater group and a permanent music group.