Yes, canola oil is almost always, if not always vegan.
It comes from a certain type of rapeseed plant, namely any plant in the Brassicaceae plant family. Here’s an example of one.
The seeds of the plants are heated and then crushed, and the oil from the seeds is extracted using a hexane solvent.
Nowhere in this process should it every come in contact with animal products, which is why canola oil is considered vegan.
There’s quite a bit of debate on whether or not its healthy, but I’ll leave that topic for another day.
You’ll find canola oil in all sorts of things, even beyond cooking, like: