Joachim Ignatius Sebastian Alva or Joachim Piedade Alva (21 January 1907 – 28 June 1979) was an Indian lawyer, journalist and politician from Mangalore.
He was a prominent Christian figure involved in the Indian independence movement.
After Independence, Alva was appointed Sheriff of Bombay in 1949.
In 1950, he entered the Provisional Parliament of India.
He was elected to the Lok Sabha in 1952, 1957, and 1962 from North Kanara.
He was nominated to the Rajya Sabha in 1968 and retired from the Rajya Sabha in 1974.