Walter Le Montais Giffard (May 27, 1856 – June 30, 1929) was a Hawaiian diplomat and a member of Liliʻuokalani's Privy Council of State.

He was born on the Island of Jersey in Great Britain and moved to Hawaii at a young age, working his way up through the W. G. Irwin & Co., Ltd organization to partnership and trustee.

He was born May 27, 1856, Island of Jersey, Great Britain, relocated to Hawaii in 1875 and was employed as a clerk by Honolulu merchant John T. Waterhouse.

[3] In 1896, the legislature of the Republic of Hawaii authorized an increase in postal rates for 1897, and ordered that all existing unused postage in the old denominations to be destroyed.

[7] While serving as secretary and executive officer of the Board of Agriculture and Forestry in 1904, he was appointed to act in place of president Lorrin A. Thurston who was temporarily out of the territory.

The original Royal Hawaiian Hotel had been built by Robert Lewers in 1872, used as a home by King Kalākaua, and later managed by George MacFarlane.