Casper Højer (commonly styled Casper Højer Nielsen) is a Danish professional footballer born 6 May 1990 in Copenhagen, Denmark. He is primarily a left-back but can also play as a left wing-back or left-sided defender.

• Nationality: Denmark
• Position: Left-back / Left wing-back
• Youth clubs: Brøndby IF (youth)
• Senior career highlights:
  • AB (Akademisk Boldklub)
  • Lyngby BK
  • FC Nordsjælland
  • Aarhus GF (Aarhus — often listed as AGF)
  • Roda JC (Netherlands)
  • VVV-Venlo (Netherlands)
  • Hannover 96 (Germany)
  • AC Horsens (Denmark)
• Notable facts:
  • Played in both Danish Superliga and in the Dutch leagues (Eredivisie/Eerste Divisie) during his career.
  • Known for solid defensive attributes, stamina, and ability to contribute offensively from the left flank.

This summary highlights his connection to Aarhus (AGF) as one of the clubs he represented during his senior career. If you need specific statistics (appearances, goals) for a particular season or club, or his current club status as of a specific date, I can provide updated numbers.