LYIT may refer to:

• Lan Yang Institute of Technology in Yilan County, Taiwan
• Letterkenny Institute of Technology in County Donegal, Ireland

• Arthur Firstenberg
• Arthur Fisher Bentley
• Arthur Fitzgerald Kinnaird, 11th Lord Kinnaird
• Arthur Fitzsimons
• Arthur Fleming Morrell
• Arthur Flemming Award
• Arthur Flower
• Arthur Flowerdew
• Arthur Floyer-Acland
• Arthur F. Odlin
• Arthur Foley Winnington-Ingram
• Arthur foley winnington ingram
• Arthur Foley Winnington Ingram
• Arthur Foljambe, 2nd Earl of Liverpool
• Arthur Fong
• Arthur Fonjallaz
• Arthur Fonzerelli
• Arthur Foote
• Arthur Forbes, 9th Earl of Granard
• Arthur Ford (psychic)
• Arthur Forman
• Arthur Fortant
• Arthur Forwood
• Arthur Foss
• Arthur Fox (fencer)