The ESTA application does not accept special characters. Below are some common substitutions in the American English alphabet for unique European letters. You may also refer to the machine readable portion of your passport (with the chevrons << >>) for the universal spelling of your name.
- ß,ß = ss
- æ = a e
- ö = oe
- ü = ue
- ë = e
- ä = ae
- Å = aa
- ø = oe
- ñ = n
- ? = i j