Atlantia may refer to:

• Kingdom of Atlantia, a regional designation used within the Society for Creative Anachronism
• Atlantia (company), an Italy-based toll road operator
• Atlantia, an album by Mago de Oz band
• Atlantia (book), a 2014 young adult fantasy novel by Ally Condie
• Atlanteia or Atlantia, in Greek mythology was a Hamadryad nymph who consorted with Danaus

• Krotoszyn
• Krotz Springs, LA
• Krotz Springs, Louisiana
• Kroum
• Kroum Pindoff
• Krouni
• Krounoi
• Krouzek
• Kroužek
• KROX Radio Tower
• KROY (defunct)
• Kroz
• Kročehlavy
• K. R. Popper
• KRQE
• KR Reykjavik
• KR Reykjavík
• Krrish
• KRRiT
• KRRL
• KRRT TV Tower
• KRS
• KRS-1
• KRS1
• Krsko