Weening is a surname. Notable people with the surname or a variant of it include:
- Weaning, a diet process to give an infant human or another mammal other kinds of suitable food while withdrawing mother's milk
- In medicine, weaning is the term used when the medical team is trying to encourage a patient on cardiopulmonary bypass or a mechanical ventilator, or some other less-invasive assistive device, to breathe on their own, unaided, which can take some time and may not always work.