Are there any stars not in any galaxy, just alone in space?

I’m curious; it seems that at least the vast majority of stars are to be found in galaxies, such as our own Milky Way. Some galaxies are big; others, like the Magellanic Clouds, not so big.

But are there any stars not in any galaxy? Just travelling happily along on their own?

Yes.

No cite right now, sorry. But yes there are.

Orphan stars discovered

Yes, stars can end up between galaxies: Rogue star shown the galactic door

Gravitational interactions between galaxies can also send streamers of stars into the void.

More:
http://curious.astro.cornell.edu/question.php?number=384