Y
- Yacht chartering
- Yachts
- Year of assessment
- Year of death
- Year of marriage/entry into civil partnership
- Yearly interest – see Interest payable, Interest receivable
- Yeast preparations and extracts
- Yogurt
- Yorkshire Water Authority
- Youlden case
- Youth centres and clubs
- Youth clubs
- Youth Offending Teams (YOTs)
- Youth training – see Training or retraining, Vocational training relief
- Youth training scheme (YTS)
- Yugoslavia
- Yugoslavia treaty