Isthmus (disambiguation)

An isthmus is a strip of land connecting two larger bodies of land.

Isthmus may also refer to:


 * Isthmus (album), a 2022 album by Irish musician Seamus O'Muineachain
 * Isthmus (Cos), an ancient town on the Greek island of Cos
 * Isthmus (newspaper), a monthly newspaper in Madison, Wisconsin
 * An anatomically narrow part of an organ; see List of anatomical isthmi
 * The visible medial third of the uterine tube is the isthmus of uterine tube or isthmus tubae uterinae
 * An edge in a graph whose deletion increases the number of connected components of the graph; see Bridge (graph theory)
 * A fictional banana republic in the James Bond film Licence to Kill