Lake Smart is a round natural freshwater lake, with a semicircular cove on its northwest side, on the northeast side of Winter Haven, Florida.

On its north and west sides it is bordered by residential developments.

On the northwest Florida State Route 544 runs along Lake Smart's cove.

Another canal, some of the time unusable because of its shallowness, is on the east side and connects to Lake Fannie.

The Hook and Bullet website says Lake Smart contains largemouth bass, bluegill and crappie.