Llywarch

Llywarch is a given name. Notable people with the name include:

• Llywarch Hen (6th century), Brythonic prince and poet
• Llywarch ap Hyfaidd (died c. 904), king of Dyfed
• Llywarch ap Llywelyn (fl. 1173–1220), medieval Welsh poet.
• Llywarch Llaety (fl. 1140–1160), Welsh court poet
• Llywarch Reynolds (1843–1916), Welsh solicitor and scholar