Yes- Moving the OEM stem up and down the steerer, and using the supplied spacers above or under as needed to position the stem. Replacing the OEM stem with another that has a different angle and/or extension. Installing a steerer extender/riser and the stem that suits you. Of course cables might have to be re sized too...

Or did you mean to only limit the question to whether there's an adjustable stem, independent of it's location on the steerer? Well then another yes. many casual bikes come with a hinged stem that allows different angles/heights but fits a threadless steerer. Andy.