Giambattista Croci (born 28 July 1965, in San Benedetto del Tronto) is a former Italian rugby union player. He played as a lock. Croci first played at Sambenedettese, appearing at the first team at 1983/84, at the Serie C. During a stint at Interforze di Napoli, during his military service, he was noticed and assigned for Rugby Rovigo, in 1988/89. The apex of his team career was achieved at Amatori Rugby Milano, where he played from 1989/90 to 1997/98, winning 4 Italian Championship titles, in 1990/91, 1992/93, 1994/95 and 1995/96, and the Cup of Italy in 1994/95. His final team was Rugby Calvisano, from 1998/99 to 1999/2000, where he finished his career, aged 34 years old.