adventurepdx

As @Salubrious mentioned, "all sorts of bikes." It's rare to be a stock item on a factory-made bicycle though. A few companies that make commuter bikes like Breezer have them as an option on their bikes. Otherwise, they are an aftermarket part. Most often, folks need to get a wheel built around a dynohub, but there are some factory made dynohub wheels.

Current dynohub makers are: Sturmey-Archer, Shimano, Sanyo, Shutter Precision, and SON/Schmidt. Yes, your company name has to start with "s" to get in on the action.

I have dynohubs on three of my bikes:

1. A S-A Dynohub (1968) on my Raleigh Superbe
2. A Sayno on my Robin Hood path racer
3. A Shutter Precision on my Bantam