I23 may refer to:

• HMS Albatross (I23)
• HMS Castleton (I23)

• Jenny Cooper
• Jenny Craig, Inc.
• Jenny Craig, Inc
• Jenny Craig Pavilion
• Jenny Curran
• Jenny Derek
• Jenny d'Héricourt
• Jenny Dolfen
• Jenny (doll)
• Jenny Don't Be Hasty
• Jenny Duck
• Jenny Duncalf
• Jenny Eckert
• Jenny Eight Lee
• Jenny Eliscu
• Jennyella
• Jennyfer Jewel
• Jennyfer Jewell
• Jenny Flex
• Jenny From The Block
• Jenny From the Block
• Jenny from the Block
• Jenny Gal
• Jenny Galloway
• Jenny Galt