Valentine Carlysle Ross Wood Johnston (27 December 1880 – 11 February 1957) was an Australian politician.
He was born in Bathurst to financier John Wood Johnston and Caroline Jane, née Mutton.
A Boer War veteran, He married Eva Emily Millard in 1911; the couple had two sons.
In 1917 he was elected to the New South Wales Legislative Assembly as the Labor member for Bathurst, holding the seat until his defeat in 1922.
He died in 1957 at Balgowlah, at which time he was working as a munitions inspector.