# Ω U+2126 OHM SIGN

- • SI unit of resistance, named after G. S. Ohm, German physicist
- • preferred representation is 03A9
- → [U+260A ☊ ASCENDING NODE](/unicode/U+260A.md)
- ≡ [U+03A9 Ω GREEK CAPITAL LETTER OMEGA](/unicode/U+03A9.md)