IFI may refer to:
- Ifield railway station, West Sussex, England (code: IFI)
- Iglesia Filipina Independente (Philippine Independent Church)
- Illinois Family Institute, United States, a conservative Christian organisation
- Industrial Fasteners Institute, the Independence, Ohio based trade and standards organization and publisher
- Inland Fisheries Ireland, a state agency in Ireland
- InnerChange Freedom Initiative, a Christian prisoner program
- International Federation of Interior Architects/Designers, a global interior architecture/design umbrella organization
- International financial institutions, as in the IMF, the World Bank, etc.
- International Fund for Ireland, inter-governmental agency promoting reconciliation in Ireland
- Institut de la Francophonie pour l'Informatique, the Francophone Institute for Computer Science.
- Institut Français d'Indonésie, a French cultural institution located in Indonesia.
- Institut de Formation Internationale, a business school located in Rouen, France.
- Irish Film Institute, a cinema and national body based in Dublin, Ireland.
- Islamic Foundation of Ireland, a religious organization in Dublin, Ireland