KNCO may refer to:

• KNCO (AM), a radio station (830 AM) licensed to Grass Valley, California, United States
• KNCO-FM, a radio station (94.1 FM) licensed to Grass Valley, California, United States

• Newark Penn Station (NJT station)
• Newark Plank Road
• Newark Portuguese
• Newark Public Library
• Newark Public Schools
• Newark Public Schools (New Jersey)
• Newark race riot
• Newark rail crash
• Newark riot
• Newark Rural District
• Newark (SEPTA station)
• Newark Skeeters
• Newark Star-Eagle
• Newark Star Ledger
• Newark station (Delaware)
• Newark Subway
• Newark Supergroup
• Newark Tech High School
• Newark Town F.C.
• Newark Township, Licking County, Ohio
• Newark Township, Ohio
• Newark Ukrainian Sitch
• Newark Unified School District
• Newark, Upper Canada
• Newark Valley (song)