Yes, although Newton did contribute.
he published his theories about calculus in 1684
Leibniz.
Leibniz and Newton
Newton and Leibniz
calculus and the stepped reckoner
No, Newton and Leibniz independently developed calculus.
Issac Newton and Leibniz
Newton and Leibniz simultaneously and independently invented calculus.
Calculus was independently discovered by Sir Isaac Newton and Gottfried Wilhelm Leibniz in the late 17th century. Newton developed his own system of calculus called "fluxions" and "method of fluents," while Leibniz developed his system of calculus based on differentials and integrals. Both their work laid the foundation for modern calculus.
Calculus was pioneered by Sir Issac Newton, followed by Gottfried Leibniz.
Gottfried Leibniz is called the father of integral calculus.
Mainly Leibniz's and Newton's version is used in Calculus Textbooks.