Rajsoomer Lallah (September 1933 – 3 June 2012) was a Mauritian lawyer and judge who played a leading role in International Human Rights cases.

He was involved in United Nations assessments related to human rights in Chile (1983–1984), industrial complaints in Nigeria (1990) and the genocide in Cambodia (1998).

After the resignation of Yozo Yokota, Lallah served as United Nations Special Rapporteur on Human Rights in Myanmar from June 1996 to November 2000.

[1] Despite being repeatedly denied entry to the country, Lallah presented highly critical reports on conditions in Burma.

He said the military regime had ignored all UN resolutions and had made no progress in improving human rights over the past four years.

[6] Lallah is well known for his concurring decision (together with Martin Scheinin) in the Joslin v New Zealand, a leading case on gay marriage.

In 1985 he was given the International Gold Mercury Award ad personam for contribution to development and human rights law.