Mirey Brook is a 6.5-mile-long (10.5 km)[1] stream in northern Massachusetts and southwestern New Hampshire in the United States.

Mirey Brook begins in the town of Warwick, Massachusetts, at the outlet of a wetland at the northern base of Mount Grace.

Continuing north, the brook enters the town limits of Winchester, New Hampshire, just as the valley changes from steep and narrow to flat and wide.

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