A: I accused him (of) losing the tickets.
B: I accused him (for) losing the tickets.
C: I accused him (about) losing the tickets.

Which is correct?

See a translation

The only one that is non-standard is "C."
"A" is what most people would say. That's the standard. But both "A" and "B" carry slightly different meanings that even native speakers probably won't often distinguish. In "A," the accusation is more active. You are accusing him of something he has recently done or something that is fresh in mind. In "B," the accusation could be about an event that has already taken place or that is no longer such a big deal. In other words, "A" is slightly stronger than "B."
This distinction is not often made, though, and, again, "A" is the standard way of saying it.