Morris Alexander KC (Yiddish: מארים אַלעקסאנדער; 4 December 1877 – 24 January 1946) was a South African lawyer and politician who was a leading figure of Cape Town's Jewish community.

He is best known for his successful campaign to have Yiddish recognized as a European language by colonial authorities, allowing thousands of Jews to immigrate to South Africa.

[4] As a young lawyer in Cape Town, Alexander joined journalist Dovid Goldblat in a campaign for the reclassification of Yiddish as a European language in South Africa.

[5] In 1903, Alexander led a delegation of Jewish community leaders to the Cape Colony's attorney general Thomas Graham, who accepted their request to recognize Yiddish as European, which allowed thousands of Jews to immigrate to South Africa.

[1][8] He would serve as its chairman and as vice president of the unified South African Jewish Board of Deputies from the organizations' foundations until the 1930s.

[17][18] The couple's home in Cape Town would become a meeting place for visiting Indian dignitaries, through which Alexander became associated with Mahatma Gandhi.

In the 1921 general election, she convinced Alexander not to join Jan Smuts's South African Party – which she viewed as increasingly racist – and instead run as an independent candidate.

[15][21] He did join the South African Party in 1931 despite his criticism of its efforts to restrict Jewish immigration over the previous decade.

[1][22] Ruth was more irked with her husband in 1923 when he declared that Judaism was "the very antithesis of Bolshevism" in a speech condemning the Rand Rebellion.