Maurice Xiberras GMH (14 November 1936 – 19 March 2017) was a Gibraltarian teacher, trade unionist and politician.

[3] He was regarded as being a strong defender of British sovereignty, who believed there was no future for Gibraltar without the continuing close relationship with the United Kingdom.

He obtained his Teaching certificate from the University of Bristol, where he later became Assistant Lecturer at its Department of Hispanic Studies from 1961 to 1963.

Xiberras and the then Chief Minister, Joshua Hassan, travelled to London in June 1976 but were unable to convince the Government of the United Kingdom which, in response issued the Hattersley Memorandum which rejected the proposals.

In 1977, he again took over as Leader of the Opposition, after the decline of the Gibraltar Democratic Movement bench, led by former IWBP member Joe Bossano.

[6] However, Xiberras resigned from his seat in the Gibraltar House of Assembly in 1979, due to family commitments and relocated to the United Kingdom.