Feliz cumpleaños is the most common short way to say “happy birthday” in Spanish. If you want it even shorter and more casual, you can say Feliz cumple.

Quick options

  • Feliz cumpleaños — standard and friendly.
  • Feliz cumple — short, casual, and very common in texts.
  • ¡Felicidades! — also used as a brief birthday wish in Spanish.

Short message examples

  • ¡Feliz cumpleaños!
  • ¡Feliz cumple!
  • ¡Felicidades en tu día!

If you want, I can also give you a few short versions that sound more sweet , casual , or formal.