ICAB may refer to:
- Igreja Católica Apostólica Brasileira (Brazilian Catholic Apostolic Church)
- Institute of Chartered Accountants of Bangladesh, a professional association
- Institute of Chartered Accountants of Barbados, a professional association
- Institute of Chartered Accountants of Belize, a professional association
iCab may refer to:
- iCab, a web browser for the Macintosh