Cahalan

Cahalan is a surname. Notable people with the surname include:


 * Adrienne Cahalan (born 1964), Australian sailor
 * Cissie Cahalan (1876–1948), Irish suffragette
 * Robert Cahalan (born 1946), American atmospheric scientist
 * Sinéad Cahalan, Irish camogie player
 * Susannah Cahalan (born 1985), American journalist and author