North Hertfordshire is one of ten local government districts in the county of Hertfordshire, England. Its council is based in Letchworth Garden City and the largest town is Hitchin. The district also includes the towns of Baldock and Royston and numerous villages and surrounding rural areas. Part of the district lies within the Chiltern Hills, a designated Area of Outstanding Natural Beauty.

The neighbouring districts are East Hertfordshire, Stevenage, Welwyn Hatfield, St Albans, Luton, Central Bedfordshire, South Cambridgeshire and Uttlesford.

North Hertfordshire was created on 1 April 1974 under the Local Government Act 1972, covering the area of five former districts, which were all abolished at the same time:

The new district was named North Hertfordshire, reflecting its position within the wider county.

North Hertfordshire District Council provides district-level services. County-level services are provided by Hertfordshire County Council. Much of the district is covered by civil parishes, which form a third tier of local government for their areas.

The council has been under no overall control since the 2019 election. Following the 2024 election the council is being run by a Labour minority administration.

The first election to North Hertfordshire District Council was held in 1973, initially operating as a shadow authority alongside the outgoing authorities until the new system came into force on 1 April 1974. Political control since 1974 has been as follows:

The leaders of the council since 1974 have been: