[grzm]

I’m not familiar enough with the CLR or .Net to know whether this fits your needs, but there is ClojureCLR:

https://clojure.org/about/clojureclr

[Nelkins]

There's the original/current implementation: https://github.com/clojure/clojure-clr

And the newer reimplementation: https://github.com/dmiller/clojure-clr-next