Dylan is from the Welsh dy (great) + llanw (tide) — son of the sea, the legendary Welsh sea-god mentioned in the Mabinogion. A top-1000 US baby name (girls) since 2003. Bob Dylan (born Robert Allen Zimmerman, 1941) — male; American singer-songwriter; Nobel Prize in Literature (2016) for having created new poetic expressions within the great American song tradition — making him the first songwriter to win the Nobel Prize for Literature; Blowin' in the Wind (1963), The Times They Are a-Changin' (1964), Like a Rolling Stone (1965 — voted #1 song of all time by Rolling Stone), Knockin' on Heaven's Door (1973); over 125 million records sold worldwide; Rock and Roll Hall of Fame (1988); Presidential Medal of Freedom (2012); 10 Grammy Awards. Dylan Mulvaney (born 1996) — American TikTok personality. Dylan Sprouse (born 1992) — male; American actor. Dylan Penn (born 1991) — model.
Dylan does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Dylan reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.