Entrenchment, Entrenched or Entrench may refer to:

• A trench
• Entrenchment (fortification), a type of fortification
• Military trenches with relation to Trench warfare, especially that of World War I
• An entrenchment clause within a constitution, a clause impervious to or somewhat shielded from the amendment process.
• Entrenchment hypothesis, in financial theory
• The process forming an Entrenched river, a process of erosion
• Entrench (album), a 2013 album by the Canadian band KEN mode

• Entrenched: Prologue, a 2019 film by Ray Gallardo