Llŷr or Llyr is a Welsh masculine given name. Notable people with the name include:

Llŷr Gruffydd (born 1976), Welsh politician Llŷr Ifans (born 1968), Welsh actor Llŷr Powell (born 1995), Welsh politician Llŷr Williams (born 1976), Welsh concert pianist Trystan Llŷr Griffiths (born ), Welsh tenor

See also Jonathan Llyr (born 1966), Canadian actor and TV personality