The name Chelsea is a boy's name . Chelsea and is often added to user-created lists like Ocean Names and discussed in our forums with posts like "Baby a Day".
From the experts:
Chelsea for a boy? Yes--and we've got two maleberry Chelseas to prove it (one of whom even wrote a blog for us about his experience)! Boy Chelseas would more likely be named for the British football team than the old Joni Mitchell song sung by Judy Collins.