Molesworth Street is located at the north end of the central business district of Wellington, the capital city of New Zealand.
Leading from the northern end of Lambton Quay, central Wellington's main street, it is a northbound one-way street linking the CBD with Tinakori Road, and through it, with main routes north out of the city.
The street was named for Sir William Molesworth, 8th Baronet, a prominent member of the New Zealand Company.
There is another Molesworth Street in the Wellington metropolitan area, located in the Lower Hutt suburb of Taitā.
Other prominent buildings on or near Molesworth Street include the Court of Appeal, St Paul's Cathedral (Anglican) and the National Library of New Zealand, which also holds Ngā Taonga Sound & Vision.