-- Posted by katie6116 at 6:58 pm on July 9, 2009 Colby-  I know it's used for both but whAt do you think it is more commonly used as? For a boy or girl -- Posted by melodramatic at 6:59 pm on July 9, 2009 Boy. And I don't think it's a cute name, either. -- Posted by Descartes at 6:59 pm on July 9, 2009 I think of a boy. -- Posted by jakethesnakee93 at 6:59 pm on July 9, 2009 boy -- Posted by Aerie at 6:59 pm on July 9, 2009 Boy. It's alright...sounds more like a dogs name tbh. -- Posted by boomkat at 6:59 pm on July 9, 2009 boy -- Posted by belizabeth at 6:59 pm on July 9, 2009 boy. -- Posted by kay dee at 7:00 pm on July 9, 2009 I've only met boys named Colby. -- Posted by atomictastic at 7:00 pm on July 9, 2009 Boy. If it was spelled Colbie with the IE it's a girl. Because of the singer Colbie Caillat lol. -- Posted by CrazyGrrl4U at 7:00 pm on July 9, 2009 i feel its more for of boy name... for a pet dog -- Posted by jsia at 7:04 pm on July 9, 2009 I think of a boy, but lots of names are like that...why judge?