Given name Lachlann •
Lachlann Mac Ruaidhrí (fl. 1297–1307/1308), Scottish magnate
Lachlan •
Lachlan, Lord of Galloway (died 1200) •
Lachlan Boshier (born 1994), New Zealand rugby union player •
Lachlan Buchanan (born 1990), Australian actor •
Lachlan Burr (born 1992), Australian rugby league player •
Lachlan Coote (born 1990), Australian rugby league player •
Lachlan Dent (born 2000), Australian basketball player •
Lachlan Donald Ian Mackinnon (1882–1948), Royal Navy officer •
Lachlan Dreher, Australian field hockey player •
Lachlan “Lac” Edwards, Australian gridiron football player •
Lachlan Elmer, Australian field hockey player •
Lachlan Gillespie (born 1985), Australian children's entertainer •
Lachlan Gordon-Duff (1817–1892), British politician, MP for Banffshire •
Lachlan Grant (1871–1945), Scottish doctor •
Lachlan Hansen, Australian rules footballer •
Lachlan Mackinnon (born 1956), Scottish poet, critic and literary journalist •
Lachlan Maclean (disambiguation), several people •
Lachlan Macleay (born 1931), American officer in the United States Air Force, trained as an astronaut •
Lachlan Macquarie (1762–1824), Scottish officer in the British Army, last autocratic Governor of New South Wales •
Lachlan Maranta (born 1992), Australian Rugby League player •
Lachlan McCaffrey (born 1990), Australian rugby union player •
Lachlan McGillivray (c. 1718 – 1799), Scottish emigrant to Georgia, fur trader and plantation owner •
Lachlan McIntosh (1725–1806), Scottish American general in the Continental Army •
Lachlan McLean (news anchor) (born 1968), American radio host •
Lachlan McPherson (born 1900), Scottish footballer with Notts County, Swansea and Everton •
Lachlan Mitchell, Australian rugby union player •
Lachlan Morton (born 1992), Australian professional road racing cyclist •
Lachlan Murdoch (born 1971), Australian and British media executive •
Lachlan Nieboer (born 1981), English actor and producer •
Lachlan Olbrich (born 2003), Australian basketball player •
Lachlan Pendragon (fl. 2020's), Oscar-nominated Australian animator •
Lachlan Power (born 1995), Australian YouTuber •
Lachlan Renshaw, Australian middle-distance runner •
Lachlan Ross (born 1973), Australian rules footballer •
Lachlan Stevens (born 1978), Australian cricket player and coach •
Lachlan Turner (born 1987), Australian rugby union player •
Lachlan Wales (born 1997), Australian soccer player •
Lachlan Walmsley (born 1998), Scottish rugby league footballer •
Lachlan Watson, American actor
Lachie/Lachy •
Lachy Doley, Australian musician •
Lachie Henderson, Australian rules footballer •
Lachy Hulme (born 1971), Australian actor and screenwriter •
Lachie Hunter (born 1994), AFL footballer •
Lachie McMillan (1900–1983), Scottish footballer •
Lachie Munro (born 1986), New Zealand rugby player •
Lachie Neale (born 1993), AFL footballer •
Lachie Plowman (born 1994), AFL footballer •
Lachie Stewart (1943–2025), Scottish distance runner •
Lachie Thomson (1873–1940), English footballer •
Lachie Whitfield (born 1994), AFL footballer
Lochlann/Lochlan/Lochlainn •
Lochlainn Ó hUiginn (died 1464), member of the Ó hUiginn brehon family •
Lochlann Ó Mearáin (born 1973), Irish actor •
Lochlann of Galloway (died 1200), Lord of eastern Galloway •
Lochlann Óg Ó Dálaigh, 17th-century Irish poet •
Lochlainn O'Raifeartaigh (1933–2000), Irish physicist •
Lochlann Quinn (born 1941), Irish entrepreneur •
Lochlan Watt (born 1987), Australian broadcaster •
S. Lochlann Jain, writer and academic ==Fictional characters==