Dorset Police is the territorial police force responsible for policing the English county of Dorset in the south-west of England.

Dorset County Constabulary was formed in 1855. On 1 October 1967 it merged with Bournemouth Borough Police to form Dorset and Bournemouth Constabulary. On 1 April 1974 this force took over some areas (mainly Christchurch and its hinterland) from Hampshire Constabulary and acquired its present name.

In 1965, Dorset County Constabulary had an establishment of 544 and an actual strength of 466.

51% of Dorset's 687,000 Population reside in 5% of the area, which is the conurbations of Poole and Bournemouth. Within the tourist season this number rises by another 300,000.

As of April 2008, the force was divided into two Divisions: Bournemouth and Poole (sometimes known as the Conurbation) Division and Dorset County Division (consisting of the rest of Dorset, stretching from Lyme Regis in the west, to Gillingham in the north and Walkford in the east of the county). This restructuring is in line with force policy of recreating a "Neighbourhood-led police force" and matches up with the local council's wards, to monitor local statistics.

Dorset ( /ˈdɔrsɨt/) (or archaically, Dorsetshire), is a county in South West England on the English Channel coast. The county town is Dorchester which is situated in the south. The Hampshire towns of Bournemouth and Christchurch joined the county with the reorganisation of local government in 1974. The ceremonial county comprises the area covered by the non-metropolitan county, which is governed by Dorset County Council, together with the unitary authorities of Poole and Bournemouth. Dorset covers an area of 2,653 square kilometres (1,024 sq mi); it borders Devon to the west, Somerset to the north-west, Wiltshire to the north-east, and Hampshire to the east. Around half of Dorset's population lives in the South East Dorset conurbation. The rest of the county is largely rural with a low population density.

The county has a long history of human settlement and some notable archaeology, including the hill forts of Maiden Castle and Hod Hill. A large defensive ditch, Bokerley Dyke, delayed the Saxon conquest of Dorset for up to 150 years. In 1348 the black death came ashore at Melcombe Regis and spread throughout England, killing a third of the population. Dorset has seen much civil unrest: the first trade union was formed by farm labourers from Tolpuddle in 1834, the Glorious Revolution was instigated in an ice-house at Charborough Park, and the Duke of Monmouth and his rebels landed at Lyme Regis. During the English Civil War (1642–1651) angry yokels fought with Cromwell's forces near Shaftesbury. The naval base at Portland has had a pivotal role in the nation's defence for many years, and with Weymouth and Poole was one of the main embarkation points on D-Day.

A police officer (also known as a policeman or policewoman, and constable in some forces, particularly in the United Kingdom and other Commonwealth nations) is a warranted employee of a police force. In the United States, "officer" is the formal name of the lowest police rank; in many other countries "officer" is a generic term not specifying a particular rank, and the lowest rank is often "constable". Police officers are generally charged with the apprehension of criminals and the prevention and detection of crime, and the maintenance of public order. Police officers may be sworn to an oath, and have the power to arrest people and detain them for a limited time, along with other duties and powers.

Some police officers may also be trained in special duties, such as counter-terrorism, surveillance, child protection, VIP protection, and investigation techniques into major crime, including fraud, rape, murder and drug trafficking.

Responsibilities of a police officer are varied, and may differ greatly from within one political context to another. Typical duties relate to keeping the peace, law enforcement, protection of people and property, and the investigation of crimes. Officers are expected to respond to a variety of situations that may arise while they are on duty. Rules and guidelines dictate how an officer should behave within the community, and in many contexts restrictions are placed on what the uniformed officer wears. In some countries, rules and procedures dictate that a police officer is obliged to intervene in a criminal incident, even if they are off-duty. Police officers in nearly all countries retain their lawful powers, while off duty.