Waller Hugh Paton RSA RSW (27 July 1828 – 8 March 1895) was a Scottish landscape artist in the second half of the 19th century.

Paton was born in Wooer's Alley, Dunfermline, the son of Joseph Neil Paton (1797-1874), a damask designer, and Catherine McDiarmid.

In his teens, Paton worked with his father as a damask designer. From age twenty he trained under the mid-19th century artist John Houston (1802–1884) RSA. He was elected an associate of the Royal Scottish Academy, in 1857 and became a full member (RSA) in 1865. In 1878 he became a member of the Royal Society of Watercolourists (RSW).

In 1858 he and his brother illustrated William Edmondstoune Aytoun's book "Lays of the Scottish Cavaliers", published in 1863.

Paton was one of the few of his generation to work "en plain air", the fashion then being to complete landscapes in the comfort of a studio. He enjoyed depicting the countrysides of Perthshire, Aberdeenshire, and especially the Isle of Arran. His work is typified by rich purple sunsets.

From 1859, Paton lived in Edinburgh, initially staying with his brother Joseph in his large Georgian townhouse at 37 Drummond Place in the New Town.

In 1861 and 1868, he toured the Continent with his brother Joseph.

In 1862 he married Margaret Kinloch of Maryculter near Aberdeen. They had four sons and three daughters.

Paton died at his home, 14 George Square, Edinburgh, on 8 March 1895.