Yes, in certain cultures (China, Egypt, India) the symbolic meaning of owl is associated with death, but you must understand that the owl is not a symbol of death per-se. Rather - it was revered (honored) as being the guardian of the after-life - a highly respected emblem indeed.
Throughout many cultures, the symbolic meaning of owl deals with:
Native American tribes (primarily plains’ Indians) viewed the owl as a protector against harm and their feathers were ritually worn to ward of evil spirits.
Ancient Athenians made the owl an emblem of wisdom and even emblazoned the image of the owl on their coinage. To the ancient Greeks, the owl is a symbol of Athene who is goddess of foresight & knowledge.
Taking symbolism from the owl directly, it is noteworthy that it is a creature of the night. Nocturnal creatures are symbolic of inner-knowing, psychic ability, and intuition - so too is the owl.
If an owl has visited you, an incredible gift has been bestowed. Also, keep in mind that animals are only called to those who share the same energy. In other words, you hold within you some of the very same symbolic attributes the owl represents.
To illustrate, you may have abilities to know things that others do not know. It may be likely you have very strong intuitive abilities that can be fine-tuned. Further, you may be strong-willed person, and/or have a protective side to you.
These owl sightings may be messages for you to develop your education further. Or, the owl may be trying to tell you to develop your intuition further.
Owls also show themselves as a sign of warning (no, not of death). You simply need to pay close attention to people around you - owls are incredibly perceptive - you are probably perceptive too - use your powers of perception around new people you may meet. Not everyone is as nice, or “cool” as they seem to be.