I don't believe there is. The reason for this is probably that people that use tiling window managers tend to be a) quite technically proficient, and b) tend towards minimalism—or exacting standards of control over their setups.
Neither of these two conditions lends themselves naturally to pre-built solutions.
If your window manager of choice is dwm, for example, why would you want to install a distro where someone else had made the majority of the decisions about the packages, environment etc for you?
You would be much better off with a minimal install of your base distro and configuring everything else yourself – which undermines the rationale for a tiling distribution.