Diwan Bahadur Sir Arcot Lakshmanaswami Mudaliar, FRCOG, FACS (October 14, 1887 – 1974) was an Indian educationist and physician. He was identical twin brother of Sir Arcot Ramasamy Mudaliar.
He pursued his education from the prestigious Madras Christian College. He later went on to become the longest serving Vice-Chancellor of Madras University (for 27 years) and principal of Madras Medical College. He was also the Deputy Leader of the Indian delegation to the First World Health Assembly in Geneva in 1948. He was elected as the chairman of the World Health Organisation (WHO) Executive Board in 1949 and 1950, was Vice-President of the Eighth World Health Assembly in 1955 and President of the Fourteenth World Health Assembly.
He was knighted in the 1945 New Year Honours, and was awarded the Padma Bhushan in 1954 and the Padma Vibhushan in 1963.Clinical Obstetrics first edition 1938; later revised as Mudaliar and Menon, 10th edition, ISBN 81-250-2870-6