What does Den mean?
Den \den\ as a boys' name is of Greek, English and Old English derivation, and Den means "follower of Dionysius; son of Dennis". Den is a derivative of Dennis (Greek, English): also variant of Dionysius. Den is also a variation of Dennison (Old English).
Den is an uncommonly occurring first name for males. Den is an equally uncommon last name for all people. (2000 U.S. Census)
Below is a charted comparison of the popularity of the boy name Den and associated names. Popular variation forms of Den (#unlisted) are Denis, Dennie, Dennis (#491 last year), Denny, Deon, Dion and Dionisio. Usage of these boy names reached its peak during the years 1970-1979 and is now much lower, with versions like Dennie, Dennis, Denny, Deon and Dion becoming somewhat outmoded. (Top 1000 Birth Names Records, 2014)
Den is alike in pronunciation to Dain, Dan▼, Dane▲, Dann, Dean▲, Deane, Deen, Deion▼, Dene, Deonn, Deyn, Deyon, Doan, Don▼, Donn▼ and Dunn. Other suggested similar baby names are Ben▼, Dana▼, Dani, De-, Dee▼, Del▼, Des, Dev, Dex, Dino▼, Dom, Ken▼, Len▼, Pen and Ren. These names tend to be more commonly used than Den.