John Small (19 April 1737 – 31 December 1826) was an English professional cricketer who played during the 18th century and had one of the longest careers on record. Born at Empshott, Hampshire, he is generally regarded as the greatest batsman of the 18th century and acknowledged as having been the first to master the use of the modern straight bat which was introduced in the 1760s. He probably scored the earliest known century in important cricket. He died at Petersfield, where he was in residence for most of his life and where he established businesses.