A grip mounting structure for a utility vehicle includes an R.O.P.S. surrounding a riding space provided with a seat, a front-seat central grip provided to the R.O.P.S. and having a holding portion configured to be held by a crew member sitting on the seat, and an additional grip detachably mounted to at least one of the R.O.P.S. and the front-seat central grip and having a holding portion configured to be held by the crew member. The holding portion of the additional grip has a projection amount to the riding space that is larger than a projection amount of the holding portion of the front-seat central grip to the riding space.