Don't count on ROI, but there's Gawminers:
http://www.gawminers.com/Zoomhash is more of a reseller, but they offer a cloud service:
http://zoomhash.com/pages/make-moneyButterfly Labs used to have a cloud mining solution, but they're a proven scam, so I won't even provide to the links to it.
Cointerra also has some mining contracts, but they've burned customers before with their underperforming, overpriced, pre order equipment, so I also won't link to them.
If you do decide to jump into cloud mining, don't invest a whole lot, just enough that you aren't afraid to lose.