UACV may stand for:

• Unmanned aerial combat vehicle: see Unmanned combat aerial vehicle
• Unpasteurized apple cider vinegar or unfiltered apple cider vinegar: see Apple cider vinegar

• Say Goodbye (album)
• Say Goodbye (Chris Brown song)
• Say Goodbye (Dave Matthews Band song)
• Say Goodbye Good
• Say Goodbye (Hunters and Collectors Song)
• Say Goodbye / Love Ain't Gonna Wait For You
• Say Goodbye / Love Ain't Gonna Wait for You
• Say Goodbye (song)
• Say Goodbye (Theory of a Deadman song)
• Say Goodnight, Gracie
• Say Goodnight, Sleep Alone
• Say Good Night to Illiteracy
• Sayhad
• Say Hello
• Say 'hello' to my little friend!
• Say hello to my little friend
• Say Hello to Soft Cell
• Say Hello to Someone from Massachusetts
• Say Hello to the Angels
• Say Hello to the Angels / NYC
• Say Hello to the Angels (song)
• Say Hello, Wave Goodbye
• Say Hello Wave Goodbye: Live
• Say Hey Records
• Say Hi