Family name Mulcahy (Mulcahy 
) , all over the world, is a common last name. The cognomen Mulcahy is characteristic of Marshall Islands, where it is a common surname, Ireland, where it is quite a common surname, and Barbados, where it is quite a rare surname. In absolute terms, it most frequently occurs in the United States, Ireland, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Mulcahy | United Kingdom, Australia, Ireland, United States, Canada |
|
edward mulcahy Australian politician, AU (b. 1850) |
|
|
daniel mulcahy Queensland politician, AU (b. 1857) |
|
|
dan mulcahy Australian politician, AU (b. 1882) |
|
| denis dowling mulcahy Irish doctor (b. 1833) |
|
|
|
francis p. mulcahy United States Marine Corps general, US (b. 1894) |
|
| patrick howard mulcahy American newspaper publisher, US (b. 1846) |
|
|
| james mulcahy canadian-American architect (1858-1915) (b. 1858) |
|
|
|
hugh mulcahy American baseball player and coach, US (b. 1913) |
|
| cornelius mulcahy Irish catholic priest and academic, IE (b. 1870) |
|
|
| john mulcahy American rower, US (b. 1876) |
|
|
| jack mulcahy Australian rules footballer, AU (b. 1876) |
|
|
| pat mulcahy Irish hurler, 1877–1963, IE (b. 1877) |
|
|
| edwin c. mulcahy American newspaper publisher and politician, US (b. 1885) |
|
|
| claude mulcahy South African cricketer and South African Army officer, GB (b. 1886) |
|
|
| hugh mulcahy Australian rules footballer, AU (b. 1894) |
|