Leerdam is a city and former municipality in the western Netherlands, in the province of Utrecht. The municipality was merged with the municipalities of Vianen and Zederik on 1 January 2019. The name of the new municipality is Vijfheerenlanden which is a part of the province Utrecht. The former municipality Leerdam was a part of the province South Holland.

Utrecht, officially the Province of Utrecht, is a province of the Netherlands. It is located in the centre of the country, bordering the Eemmeer in the north-east, the province of Gelderland in the east and south-east, the province of South Holland in the west and south-west and the province of North Holland in the north-west and north. The province of Utrecht has a population of about 1,388,000 as of January 2023. With a land area of approximately 1,484 square kilometres (573 sq mi), it is the second smallest province in the country. Apart from its eponymous capital, major cities and towns in the province are Amersfoort, Houten, IJsselstein, Nieuwegein, Veenendaal and Zeist. The busiest railway station in the Netherlands, Utrecht Centraal, is located in the province of Utrecht.