Throughout the world, Calihan (Calihan 
) is an extremely rare epicene first name. Much more prevalently, Calihan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Calihan | Turkey, Philippines, United States, India, Brazil |
Pj, Gary, Glen, Lila, Lois, Josh, John, Jeff, Jill, Tara, Dale, Ncle, Vera, Fern, Molly, Sally, Shari, Shawn, Susan, Sonya, Stacy, Erin, Rene, Phil, Paul, Sue, Amy, Kim, Pat, Ray, Dan, Lee, Joe, Tom, Ian, Mary, Mike, Sara, Sean, Alma, Anna, Chaz, Cora, Beth, Boni, Kate, Scott, and Anita