William David Baillie (28 May 1934 – 25 December 2018) was a New Zealand runner.
He represented his country at the 1964 Summer Olympics in Tokyo, where he placed sixth in the 5000 m. 
He also competed at the 1954, 1958, 1962, and 1966 British Empire and Commonwealth Games.
He was born in Nelson, New Zealand.

In 2001, Baillie was appointed a Member of the New Zealand Order of Merit, for services to athletics.

Baillie died in Auckland on 25 December 2018, aged 84.
William David Baillie (28 May 1934 – 25 December 2018) was a New Zealand runner. He represented his country at the 1964 Summer Olympics in Tokyo, where he placed sixth in the 5000 m. 
He also competed at the 1954, 1958, 1962, and 1966 British Empire and Commonwealth Games. He was born in Nelson, New Zealand.
In 2001, Baillie was appointed a Member of the New Zealand Order of Merit, for services to athletics.
Baillie died in Auckland on 25 December 2018, aged 84.
Bill Baillie