William Henry Walter Ballantine (1847–1911)^[1] was a British Liberal Party politician. He sat in the House of Commons from 1887 to 1895.

Samuelson unsuccessfully contested the 1885 general election in the Tewkesbury division of Gloucestershire.^[2] He entered Parliament nearly two years later, when Ballantine was elected at a by-election in July 1887 as the Member of Parliament (MP) for the city of Coventry, following the elevation to the peerage of the Conservative MP Henry Eaton.^[2]

He was re-elected at the next general election, in 1892, but was defeated at the 1895 general election and did not stand for Parliament again.^[2]