- Hanukkah : 11,300,000 hits.
- Chanukah : 2,930,000 hits.
- Hannukah : 867,000 hits.
- Hanukah : 556,000 hits.
- Hanuka : 357,000 hits.
- Chanukkah : 231,000 hits.
- Chanuka : 293,000 hits.
- Channukah : 131,000 hits.
- Chanukka : 108,000 hits.
- Hannukkah : 54,700 hits.
- Januka : 33,700 hits.
- Hanukka : 31,400 hits.
- Channuka : 14,700 hits.
- Hannuka : 12,500 hits.
- Hannukka : 7,870 hits.
- Channukkah : 6,050 hits.
- Xanuka : 2,520 hits.
- Channukka : 2,040 hits.
- Janukah : 394 hits.
- Janukkah : 215 hits.
- Chanuqa : 120 hits.
This is the 2008 update compiling Google search results for 22 variations on the spelling of Hanukkah. This year, by request, I added three variations based on Spanish spellings starting with the letter J.
Previous years: 2004, 2005, 2006, 2007. 2004 numbers thanks to Jeremy Blachman
Current Google Trends snapshot of the top 5 spellings:
How Do You Spell Channukkahh by the Leevees