Yes, for instance this is mixed Zig/C project (the C part are the sokol headers for the platform-glue code):
https://floooh.github.io/pacman.zig/pacman.html
The Git repo is here:
https://github.com/floooh/pacman.zig
...in this specific project, the Emscripten SDK is used for the link step (while compilation to WASM is handled by the Zig compiler, both for the Zig and C sources).
The Emscripten linker enables the 'embedded Javascript' EM_JS magic used by the C headers, and it also does additional WASM optimizations via Binaryen, and creating the .html and .js shim file needed for running WASM in browsers.
It's also possible to create WASM apps running in browsers using only the Zig toolchain, but this requires solving those same problems in a different way.