William Elger (1891 – 6 November 1946) was a Scottish trade union leader.
In 1922, he was elected as General Secretary of the Scottish Trades Union Congress (STUC).
[1] His focus was on increasing membership of the STUC, encouraging Scottish unions to merge into their UK-wide counterparts in order that the larger body would then affiliate.
Although this approach was unpopular with Scottish trades councils, which saw their influence reduced, it proved successful, with membership growing by more than a third during his secretaryship.
[2] Elger was also elected to Glasgow City Council, representing the Labour Party in Ruchill.