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A lieutenant governor or lieutenant-governor is a high officer of state, whose precise role and rank vary by jurisdiction, but is often the deputy or lieutenant to or ranking under a governor — a "second-in-command". In many Commonwealth of Nations states, a lieutenant governor is the representative of the monarch and act as the nominal chief executive officer of the state, province or territory they received appointment, although by convention the lieutenant governor delegates actual executive power to the premier of a province.
In the United States, lieutenant governors are usually second-in-command to a state governor, and the actual power held by the lieutenant governor varies greatly from state to state.
- Australia - Lieutenant governor (Australia)
- Canada - Lieutenant Governor (Canada)
- Lieutenant Governor of Alberta
- Lieutenant Governor of British Columbia
- Lieutenant Governor of Manitoba
- Lieutenant Governor of New Brunswick
- Lieutenant Governor of Newfoundland and Labrador
- Lieutenant Governor of Nova Scotia
- Lieutenant Governor of Ontario
- Lieutenant Governor of Prince Edward Island
- Lieutenant Governor of Quebec
- Lieutenant Governor of Saskatchewan
- Guernsey - Lieutenant Governor of Guernsey
- Hong Kong - Lieutenant Governor of Hong Kong - role used from 1843-1902
- India - Governors and Lieutenant-Governors of states of India
- Isle of Man - Lieutenant Governor of the Isle of Man
- Jersey - Lieutenant Governor of Jersey
- New Zealand - The only person to have held the rank of Lieutenant Governor of New Zealand was Royal Navy Captain William Hobson from 1839–1841 when New Zealand colony was a dependency of the colony of New South Wales, governed at that time by Sir George Gipps. When New Zealand was designated a Crown colony in 1841, Hobson was raised to the rank of governor, which he held until his death the following year. Subsequently in 1848 New Zealand was divided into three provinces: New Ulster, New Munster, and New Leinster, each with their own Lieutenant Governors.
- U.S. states - Lieutenant governor (United States)
The Netherlands has a Lieutenant governor (Dutch: gezaghebber) in each of the three special municipalities on the islands in the Caribbean Netherlands; Saba, Bonaire, and Sint Eustatius, where their function is similar to a Mayor in the European Netherlands.
In the Netherlands Antilles, the Lieutenant governor (Dutch: gezaghebber) was head of the governing council of the island territories which formed a level of decentral government until the dissolution of the Netherlands Antilles.