Dohodový dub, A memorial tree growing in the Lány game preserve in the Central Bohemia Region.

The Dohodový dub is an old oak in the Lánská obora game reserve near Lány. Its upper trunk and crown are gone, leaving a trunk torzo with two original branches that have since put out younger shoots. It is protected as part of the Křivoklátsko Protected Landscape Area, not under the tree-protection law.

The Lány game reserve and castle passed into state ownership on 21 July 1921 and served as the president's summer residence. Tradition holds that President Tomáš Garrigue Masaryk signed the Little Entente agreement beneath this oak in 1922, though 1924 and 1925 are also cited, and the tale names King Carol II of Romania, who only took the throne in 1930, or King Alexander of Yugoslavia. Masaryk also met his Friday Club, including Josef and Karel Čapek, by the tree.

The oak is also called Dub Malé dohody (Little Entente Oak) and Masarykův dub (Masaryk's Oak). Tradition holds that President Tomáš Garrigue Masaryk met his Friday Circle here, among them the writers Josef and Karel Čapek.

The oak stands in the Lány game reserve, an enclosed forest that is not freely open to the public; access is only possible on permitted or guided visits. The tree is protected as part of the Křivoklátsko Protected Landscape Area, not under the separate tree-protection law. There are no information panels at the site.

The oak lost its upper trunk and crown at some point, leaving a torso with two original branches that later sprouted younger shoots. It appears in episode 8, "Royal Trees", of the Czech Television series Paměť stromů, and sequences of Markéta Lazarová (1966–1967) were filmed near it.