Rhys Ifans (IPA: ; born Rhys Evans, 22nd July 1968) is a Welsh actor.

Ifans was born in Haverfordwest, Pembrokeshire, Wales, the son of Beti-Wyn, a nursery school teacher at Ysgol Pentrecelyn, and Eurwyn Evans, a primary school teacher. His first language is Welsh and he says that he began using the Welsh spelling of his name, "just to be difficult".

Ifans grew up in Ruthin, in North Wales, and received his primary education at Ysgol Pentrecelyn where his mother worked, he then attended Ysgol Maes Garmon, a Welsh language secondary school in Mold, Flintshire, where he sat his O levels and A levels. He also attended youth acting schools at Theatr Clwyd, Mold.