We will spend a partial day and evening in Utrecht May 18. We'd like to visit several of the museums and looked on-line for a Utrecht Museum Pass (I use this term as a generic term for a 24 hour ticket to many/most of the museums). All I could find was the Holland Card and this didn't seem like a good value.
I'm not aware of any pass just for Utrecht. If you're going to other places in the country, the Museumkaart is good for most of the ones in Utrecht, as well as lots of others all over the Netherlands. It's something like €60, so it won't pay just for Utrecht, but it can save a fortune if you're seeing other museums elsewhere.
And good choice to see Utrecht! I loved the Centraal Museum, the rail museum, and (most special and unusual) the museum of music boxes and fairground organs. It's also a very pretty town, with unique bi-level canals.