Frog Rock is a glacial erratic on Bainbridge Island, Washington.

[1] The frog shape is made of two stacked granite boulders, painted by a pair of local residents to resemble a frog on June 6, 1971.

[2] The pair of boulders were reportedly once a single boulder which was dynamited in the 1950s or earlier, in order to remove it from a road right-of-way.

[3] The rock is locally famous,[5] known to be a humorous historic marker,[6] and a notable visitor attraction.

[5] A local "resiliency forum" is named for it.