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