Giovanni Antonio Amedeo Plana (6 November 1781 – 20 January 1864) was an Italian astronomer and mathematician.

Joseph Fourier, impressed by Plana's abilities, managed to have him appointed to the chair of mathematics in a school of artillery in Piedmont in 1803, which came under the control of the French in 1805.

In 1820 he was one of the winners of a prize awarded by the Académie des Sciences in Paris based on the construction of lunar tables using the law of gravity.

In 1832 he published the Théorie du mouvement de la lune, the same year he was elected a Foreign Honorary Member of the American Academy of Arts and Sciences.

[2] In 1834 he was awarded with the Copley Medal by the Royal Society for his studies on lunar motion.