FII

FII may refer to:

• Fabricated or induced illness, also known as Münchausen syndrome by proxy
• Foreign Institutional Investor
• Forestry Innovation Investment, a company publicly owned and operated by the province of British Columbia, Canada
• Friends of Israel Initiative
• Falling into Infinity, a 1997 studio album by progressive metal band Dream Theater
• Fokker F.II, a commercial aircraft
• Foxconn Industrial Internet, a Chinese electrical equipment company
• Future Investment Initiative Institute, an investment conference in Saudi Arabia