List of courtesy titles in the peerages of Britain and Ireland

This is a list of courtesy titles used for the heirs of currently extant titles in the Peerages of England, Scotland, Great Britain, Ireland, and the United Kingdom. Asterisks denote courtesy titles currently used by living heirs.

Courtesy titles for heirs of dukes PeerSonGrandsonGreat-grandsonThe Duke of NorfolkEarl of Arundel*Lord Maltravers The Duke of SomersetLord Seymour*For example, the present (19th) duke was known as The Honourable John Seymour from his birth on 30 December 1952 until the death of his grandfather (the 17th duke) on 26 April 1954. The Duke of Richmond, Lennox and GordonEarl of March and Kinrara*Lord SettringtonFor example, The Honourable Charles Henry Gordon-Lennox (15 August 1895 – 5 September 1895) was born and died in the lifetimes of his great-grandfather (the 6th duke), his grandfather (then known as Earl of March) and his father (then known as Lord Settrington)The Duke of GraftonEarl of Euston*Viscount IpswichFor example, the 9th duke was known as The Honourable John Fitzroy from his birth on 1 August 1914 until the death of his father (William FitzRoy, Viscount Ipswich) on 23 April 1918.The Duke of BeaufortMarquess of Worcester*Earl of Glamorgan*Viscount GrosmontThe Duke of St AlbansEarl of Burford*Lord Vere The Duke of BedfordMarquess of Tavistock*Lord HowlandFor example, the 14th duke was known as The Honourable Henry 'Robin' Russell from his birth on 21 January 1940 until the death of his great-grandfather (the 11th duke) on 27 August 1940.The Duke of DevonshireMarquess of HartingtonEarl of Burlington*The eldest son of the current Duke opts to continue using the courtesy title afforded to the grandson of Dukes, which he used in his grandfather's lifetime, in lieu of the title traditionally used by the heir apparent.Lord Cavendish*The Duke of MarlboroughMarquess of Blandford*Earl of Sunderland*Lord ChurchillThe Duke of RutlandMarquess of Granby*Lord Haddon The Duke of Hamilton and BrandonMarquess of Douglas and Clydesdale*Earl of AngusLord AbernethyThe Duke of Buccleuch and QueensberryEarl of Dalkeith*Lord Eskdaill* The Duke of ArgyllMarquess of Lorne*Earl of CampbellViscount LochawThe Duke of AthollMarquess of Tullibardine*Earl of StrathtayViscount BalquhidderThe Duke of MontroseMarquess of Graham*Earl of KincardineViscount DundaffThe Duke of RoxburgheMarquess of Bowmont and Cessford*Earl of KelsoViscount BroxmouthThe Duke of ManchesterViscount MandevilleLord Kimbolton The Duke of NorthumberlandEarl Percy*Lord Lovaine The Duke of LeinsterMarquess of KildareEarl of OffalyViscount LeinsterThe Duke of WellingtonMarquess of Douro*Earl of Mornington*Viscount WellesleyThe Duke of SutherlandMarquess of Stafford*Earl GowerViscount TrenthamThe Duke of AbercornMarquess of Hamilton*Viscount Strabane* The Duke of WestminsterEarl GrosvenorViscount Belgrave The Duke of FifeEarl of Southesk*Prior to the 3rd Duke of Fife succeeding to the title of Earl of Southesk, the heir to the Dukedom used the courtesy title Earl of Macduff.Lord CarnegieMaster of CarnegieThe Duke of GloucesterEarl of Ulster*Lord Culloden* The Duke of KentEarl of St Andrews*Lord Downpatrick* The Duke of YorkEarl of InvernessLord Killyleagh The Duke of CambridgeCurrent holder is also the Duke of Cornwall and Rothesay as heir apparent to the British throne. Uses the higher title of Prince of WalesEarl of StrathearnNot currently in use, as the appropriate heir bears the title of prince.Lord Carrickfergus The Duke of SussexEarl of DumbartonLord Kilkeel The Duke of EdinburghEarl of Wessex*Viscount Severn 

Courtesy titles for heirs of marquesses PeerSonGrandsonThe Marquess of WinchesterEarl of Wiltshire*Lord St JohnThe Marquess of HuntlyEarl of Aboyne*Lord Strathavon*The Marquess of QueensberryViscount Drumlanrig For example, the 11th marquess was known as The Honourable Francis Douglas from his birth on 17 January 1896 until the death of his grandfather (the 9th marquess) on 31 January 1900.The Marquess of TweeddaleEarl of GiffordViscount WaldenThe Marquess of LothianEarl of Ancram*Lord NewbattleThe Marquess of LansdowneEarl of Kerry*/ShelburneViscount Calne & Calston*/ClanmauriceThe Marquess TownshendViscount Raynham* The Marquess of SalisburyViscount Cranborne*For example, the current (7th) marquess was known as The Honourable Robert Gascoyne-Cecil from the death of his great-grandfather (the 4th marquess) on 4 April 1947 until the death of his grandfather (the 5th marquess) on 23 February 1972.The Marquess of BathViscount Weymouth* The Marquess of HertfordEarl of Yarmouth*Viscount Beauchamp*The Marquess of ButeEarl of Dumfries*Viscount MountjoyThe Marquess of WaterfordEarl of Tyrone*Lord Le PoerThe Marquess of DownshireEarl of Hillsborough*Viscount KilwarlinThe Marquess of DonegallEarl of Belfast*Viscount Chichester*The Marquess of HeadfortEarl of Bective*Lord Kenlis*The Marquess of SligoEarl of Altamont*Viscount WestportThe Marquess of ElyViscount Loftus The Marquess of ExeterLord Burghley* The Marquess of NorthamptonEarl Compton*Lord Wilmington*The Marquess CamdenEarl of Brecknock*Viscount BayhamThe Marquess of AngleseyEarl of Uxbridge*Lord Paget*The Marquess of CholmondeleyEarl of Rocksavage*Viscount MalpasThe Marquess of LondonderryViscount CastlereaghLord StewartThe Marquess ConynghamEarl of Mount Charles*Viscount SlaneThe Marquess of AilesburyEarl of Cardigan*Viscount SavernakeThe Marquess of BristolEarl Jermyn*Lord HerveyThe Marquess of AilsaEarl of Cassilis*Lord KennedyThe Marquess of NormanbyEarl of Mulgrave*Lord PhippsThe Marquess of AbergavennyEarl of LewesViscount NevillThe Marquess of ZetlandEarl of RonaldshayLord DundasThe Marquess of LinlithgowEarl of Hopetoun*Viscount Aithrie*The Marquess of Aberdeen and TemairEarl of Haddo*Viscount FormartineThe Marquess of Milford HavenEarl of Medina*Viscount AlderneyThe Marquess of ReadingViscount Erleigh* 

Courtesy titles for heirs of earls