Julia Lebel-Arias (née Arias, born 10 March 1946) is an Argentina-born chess player and Woman International Master (WIM, 1985) who represented Argentina (until 1982), France (from 1982 till 2001) and Monaco (from 2002). She is a four-times winner of the Argentine Women's Chess Championship and a three-times winner of the French Women's Chess Championship.

From the end of 1970s to the early 1980s, Lebel-Arias was one of the leading chess players in Argentina. She won the Argentine Women's Chess Championships in four consecutive years: 1974, 1975, 1976, and 1977. After moving to France, she three times won French Women's Chess Championship: 1983, 1986, and 1990. In 1985, she was awarded the FIDE Woman International Master (WIM) title. In 1988, she won the International Women's Chess Tournament in Dortmund.

Lebel-Arias twice participated in the Women's World Chess Championship Interzonal Tournaments:

Lebel-Arias played for Argentina, France and Monaco in the Women's Chess Olympiads:

Lebel-Arias played for Monaco in Chess Olympiad open events:

Lebel-Arias played for France in the European Team Chess Championship:

In 2006, in Arvier, she participated in the World Senior Chess Championship in the S50 age group and ranked 8th place.