No — tipping in Japan is considered extremely rude and insulting. This applies not only to waiters and waitresses, but to bell hops, taxi drivers — any service-oriented worker. It’s always important to check guide books on proper etiquette before visiting a foreign country.
More manners:
Other countries, where tipping in restaurants is considered demeaning or at least unnecessary, include Costa Rica, Brunei, Denmark, Fiji, Malaysia and New Zealand.
Bowing is customary in Japan, even a small nod of the head is respectful.
The wet towel offered at the dinner table in Japan is for washing your hands before you eat.
Cheers in Japanese is kampai!
When visiting a home in Japan, take off your shoes in the entryway. A pair of slippers likely will be offered as well.