Across the world, Hadt (Hadt 
) is an extremely rare boy's first name. Much more prevalently, Hadt is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hadt | Poland, France, Austria, United States, Germany |
Mr, Andrew, Amanda, Cheryl, Ronald, Geneva, Leslie, Janusz, Steven, Thomas, Melissa, Michael, Deborah, Gregory, Jeffery, William, Clarence, Edward, Milton, Tracy, Janet, Jan, Mary, Milt, Mike, Anne, Ryan, Jeff, Noli, Sarah, Steve, Stacy, Chris, Cathy, Brian, Peter, Guido, Laura, Jennifer, and Christine