Triuret is an organic compound with the formula (H2NC(O)NH)2CO.

Triuret is a colorless, crystalline, hygroscopic solid, slightly soluble in cold water or ether, and more soluble in hot water.

The central carbonyl is hydrogen-bonded to both terminal amino groups.

[2] The compound is typically prepared by heating thin layers of urea, the thin layers facilitating escape of ammonia: It can also prepared by treatment of urea with phosgene:[3] A similar synthesis employs urea and dimethyl carbonate with potassium methoxide as a catalyst:[4] The original synthesis entailed oxidation of uric acid with hydrogen peroxide.

[5] Triuret is a complicating by-product in the industrial synthesis of melamine from urea.