How do you spell Janice in Greek?

There isn't a direct translation of the name "Janice" into Greek that would be considered a proper equivalent. Greek names have their own phonology and structure. To get a *similar-sounding* name, you'd need to find a Greek name with a similar sound profile. There isn't a perfect match.

You could potentially use a name that shares a similar meaning, if the meaning of "Janice" is important to you. However, the meaning of "Janice" itself is debated and isn't consistently defined.

Therefore, simply transliterating it (writing it with Greek letters according to their pronunciation in English) wouldn't be culturally appropriate. It would be like writing "Janice" using Cyrillic letters for a Russian equivalent; it's technically possible, but not how names are adopted into a language.