Pasty is an uncommon given name of Welsh origin, derived from the Welsh word 'pws', meaning 'pure'. It was traditionally used more often as a surname than a first name, but in recent years it has begun to appear with greater frequency as a given name for both boys and girls.
"The name Pasty was quite popular from the late 1920s to the mid-1970s, with peak years being 1956 and 1957 when there were 8 births each."