Ciechanow Voivodship (Polish: województwo ciechanowskie) was a unit of administrative division and local government in Poland in years 1975-1998, superseded by Masovian Voivodship.

Capital city: Ciechanow

Major cities and towns: (population in 1995):

• Ciechanow (46,600);
• Mlawa (29,800);
• Plonsk (22,700);
• Dzialdowo (20,700).

See also:

• Voivodships of Poland