Cognomen Shalloo (Shalloo 
, שאלו 
) , all over the world, is a rare last name. The cognomen Shalloo is habitual in Ireland, where it is a rare surname, Israel, and the United States, where it is a very rare surname. Likewise, Shalloo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Shalloo | United Kingdom, Spain, Ireland, United States, India |
| שאלו | Israel |
| jack shalloo Irish hurler and Gaelic footballer (b. 1886) |
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| rob shalloo researcher |
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| jack shalloo British actor, GB (b. 1986) |
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