Any type of entity can own a trademark - individuals, corporations, LLCs, trusts, associations, etc. Additionally, a trademark can have one or multiple owners.
When talking about trademark ownership, most startup and SME founders deal with the question of who SHOULD own the trademark in question - them or their company. Generally, it is advisable to have the trademark ownership tied to the business since that's the entity that will use the trademark in commerce and render the goods and services associated with the trademark.
If you're interested in learning more, we have an article listing all considerations of applying for a trademark in personal vs business name.