Blodwen is a Welsh girl's name, and can refer to:

• Blodwen Davies (1897–1966), Canadian writer and historian
• Blodwen, an opera by Joseph Parry
• Blodwen, a character from The Lingo Show, a kids' TV show
• Blodwen Peak, a peak in Antarctica

• "Blodwyn", a song from the Badfinger album No Dice
• Blodwyn Pig, British rock band
• Bodwyn, a village in Anglesey, north Wales