KFNZ may refer to:

• KFNZ (FM), a radio station (103.1 FM) licensed to serve Kualapuu, Hawaii, United States
• KNIT (AM), a radio station (1320 AM) licensed to serve Salt Lake City, Utah, United States, which held the call sign KFNZ from 1996 to 2017

• Washington County, TN
• Washington County, TX
• Washington County, UT
• Washington County, Utah
• Washington County, VA
• Washington County, Vermont
• Washington County, Virginia
• Washington County, VT
• Washington County, Washington, DC
• Washington County, WI
• Washington County, Wisconsin
• Washington Courthouse, OH
• Washington Court House, OH
• Washington Courthouse, Ohio
• Washington Crossing
• Washington Crossing Historic Park
• Washington Crossing, PA
• Washington Crossing, Pennsylvania
• Washington Crossing State Park
• Washington Crossing the Delaware
• Washington Crossing the Delaware (sonnet)
• Washington C. Whitthorne
• Washington Darts
• Washington,D.C
• Washington, D.c.