William Henry Laird Smith (15 September 1869 – 21 October 1942) was an Australian politician who served in the House of Representatives from 1910 to 1922.

He was one of six children born to Elizabeth (née Laird) and John Smith; his father worked as a wheelwright and telegraph contractor.

He was an official in the Amalgamated Engineering Union and joined the Workers' Political League in Hobart in 1907, becoming a branch president in 1909.

Owing to the end of the war, he was obliged to carry out a significant reduction in the capacity of the Royal Australian Navy.

[2] Smith died suddenly on 21 October 1942, aged 73, while attending an ALP meeting at the Burnie Town Hall.