Throughout the world, Maguinness (Maguinness 
) is an extremely rare unknown gender first name. Much more frequently, Maguinness is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Maguinness | United Kingdom, Ireland, United States, Australia |
Mr, David, Donal, Donna, Linda, Janet, Helen, Meghan, Alanna, Andrew, Amanda, Adrian, Audrey, Connie, Bonnie, Kellie, Robert, Lauren, Joshua, Thomas, Teresa, Nicola, Kevin, Nicole, Chris, Megan, Ann, Amy, Ben, Ray, Roy, Lea, Liz, Jim, Tom, Matt, Sean, Alan, Andy, Anna, Ryan, Greg, Lisa, Josh, Tara, Neil, Erin, Sarah, and Norman