Cláudia Silvia Chabalgoity (born 13 March 1971) is a Brazilian former professional tennis player.

[1] Right-handed Chabalgoity began touring internationally in 1989 and won two ITF $25k titles that year, one at home in São Paulo and the other in the Spanish city of Pamplona.

As a doubles player, she made it to 102 in the world and was runner-up in two WTA Tour tournaments.

As a member of the Brazil Fed Cup team, she featured in a total of six ties, all across 1990 and 1991 (overall record: 1–7).

[3] She competed for Brazil in the women's doubles tournament at the 1992 Summer Olympics, where she and partner Andrea Vieira won their first-round match against Sweden's Catarina Lindqvist and Maria Lindström, before being beaten by the bronze medal-winning Australian team in the second round.