There have been two Baronetcies created for persons with the surname Lockhart, one in the Baronetage of Nova Scotia and one in the Baronetage of the United Kingdom. Both creations are extinct.

The Lockhart, later Lockhart-Ross Baronetcy, of Carstairs in the County of Lanark, was created in the Baronetage of Nova Scotia on 28 February 1672. For more information on this creation, see Lockhart-Ross Baronets

Lockhart-Ross Baronets

The Lockhart, later Lockhart-Ross Baronetcy, of Carstairs in the County of Lanark, was a title in the Baronetage of Nova Scotia. It was created on 28 February 1672 for William Lockhart. The fourth Baronet used the surname Ross-Lockhart, which was also borne by the sixth, seventh, eighth and ninth...

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The Lockhart Baronetcy, of Lee

Lee Castle, South Lanarkshire

Lee Castle, also known as The Lee, is a castellated mansion in Auchenglen, a branch of the Clyde Valley in South Lanarkshire, Scotland. It is located south of Braidwood, and north-west of Lanark...

 in the County of Lanark, was created in the Baronetage of the United Kingdom on 24 May 1806 for Alexander Lockhart, Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Berwick-upon-Tweed

Berwick-upon-Tweed (UK Parliament constituency)

Berwick-upon-Tweed is a constituency represented in the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament by the first past the post system of election.-Boundaries:...

. The title became extinct on the death of the fifth Baronet in 1919.

Lockhart Baronets, of Lee (1806)

• Sir Alexander Macdonald Lockhart, 1st Baronet (d. 1816)
• Sir Charles Macdonald Lockhart, 2nd Baronet (1799-1832)
• Sir Norman Macdonald Lockhart, 3rd Baronet (1802-1849)
• Sir Norman Macdonald Lockhart, 4th Baronet (1845-1870)
• Sir Simon Macdonald Lockhart, 5th Baronet (1849-1919)