Ciechanów Townhall, Neogothic town hall in Ciechanów, Poland.

Ciechanów Townhall is a two-storey brick building on a rectangular plan, standing on the north side of the market square. Its facade is centred on a tower bearing the town's coat of arms and a clock face, and the low hipped roof is covered with sheet metal. The design is neogothic, attributed to Henryk Marconi.

Most literature dates the town hall to 1844, designed by Henryk Marconi. Later research shows Marconi reworked a design by Józef Iżycki, the builder of the Przasnysz district. The brick building replaced earlier wooden town buildings on the north side of the market square.

The town hall still houses Ciechanów's municipal authorities and the civil registry office (Urząd Stanu Cywilnego), so residents come here for birth, marriage and death certificates. The city coat of arms on the tower identifies it as the seat of local government rather than a museum piece.

The town hall stands on the north side of the market square, a short walk from the centre of Ciechanów. The exterior, with the town coat of arms and clock face on the tower, can be seen from the square at any time; the building itself houses the municipal authorities and the civil registry office, so entry is for official business.

On 16 January 1945, during the German occupation, 50 prisoners were murdered in the town hall courtyard. The building itself dates from 1844, designed by Henryk Marconi from a reworked plan by Józef Iżycki, and still houses the town authorities and the civil registry office.