Verdis, officially the Free Republic of Verdis (Croatian: Slobodna Republika Verdis) (Serbian Cyrillic: Слободна Република Вердис) is a sovereign state located between Croatia and Serbia along the Danube river. On some maps, especially local maps, this land is known as Pocket-3.

The border meets Croatia by land and meets Serbia at the centerline of the Danube as shown on the maps of this page.

The parcel of land appeared due to an existing border dispute between Croatia and Serbia. The area had not been claimed by Croatia, Serbia, or any other state, which left the land unclaimed (terra nullius) since the Croatian War of Independence until it was proclaimed as the Free Republic of Verdis on 30 May 2019 by Daniel Jackson and his administration.