Meaning and name origin
Den \den\ as a boy's name is of Greek, English and Old English origin, and the meaning of Den is "follower of Dionysius; son of Dennis". Den is a variant of Dennis (Greek, English): also variant of Dionysius. Also a variant of Dennison (Old English).
Den is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).
Den is also pronounced similarly 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▼, Denny▼, Des, Dev, Dex, Dino▼, Dom, Ken▼, Len▼, Pen and Ren. These names tend to be more commonly used than Den.