Y100 Explained

Y100 or Y-100 may refer to:

• Yttrium-100 (Y-100 or ¹⁰⁰Y), an isotope of yttrium

Radio stations branded "Y100"

• KCYY in San Antonio, Texas
• WHYI in Miami, Florida
• WNCY in Green Bay, Wisconsin
• WPLY, former station in Philadelphia, Pennsylvania
• WSGY, former station in Tifton, Georgia
• WXYY, former station in Rincon, Georgia
• WZJZ in Ft. Myers, Florida