The Spaniard led all 62 laps under the lights at the Marina Bay track, producing an inch-perfect tactical drive to convert pole position into his second F1 win by 0.812s.
On aged hard tyres, Sainz kept fellow one-stopper Norris at bay in the closing laps as George Russell and Lewis Hamilton closed them down with fresher medium tyres on their Mercedes to form a four-car train.
