Road bike and mountain bike shoes
I take your question to mean you have road style 3 bolt cleat shoes, but want to use them with Shimano SPD type pedals that need a 2 bolt cleat. You are looking for a way to attach 2 bolt SPD cleats to the 3 bolt shoes.

Another way of putting it is you need a Shimano SPD to SPD-R adapter (SPD-R (road) cleats use 3 bolt attachment). 

Yes, there are adapters available. Specific product recommendations or shopping help are off topic here so I wont link to a specific product, but try Googling 'Shimano SPD SPD-R adapter'.