Goreux made his Belgium U21 debut, coming on as a second half substitute, in a 2–1 loss against Switerzland U21 on 22 August 2007.
He then made his first start for the U21 side, playing in the right–back position, in a 1–0 loss against Austria U21 on 7 September 2007.
Goreux went on to make six appearances for the Belgium U21 side.

Goreux was called up for Haiti's friendly match against Trinidad and Tobago and the 2014 World Cup Qualifiers against Curaçao, US Virgin Islands, and Antigua and Barbuda.
He scored twice on his Haiti’s debut, as they won 7–0 against US Virgin Islands.
A year later in September 2012, Goreux helped finished at top of the Group One of the Caribbean Cup qualification.

In October 2014, Goreux was called up to the squad for the Caribbean Cup qualification and appeared three times, as he helped Haiti qualify for the tournament.
The following month, he was called up to the squad for the Caribbean Cup, appearing three times in the tournament.
The following July, he was called up to the squad for the CONCACAF Gold Cup, appearing two times in the tournament.

In May 2016, Goreux was called to the Haiti’s squad for the Copa América Centenario and appeared two times in the tournament.
The following March, he played in both legs against Nicaragua in the Gold Cup Play-Off, as Haiti lost 4–3 on aggregate, in what turns out to be his last appearance for the national side.
Goreux made his Belgium U21 debut, coming on as a second half substitute, in a 2–1 loss against Switerzland U21 on 22 August 2007. He then made his first start for the U21 side, playing in the right–back position, in a 1–0 loss against Austria U21 on 7 September 2007. Goreux went on to make six appearances for the Belgium U21 side.
Goreux was called up for Haiti's friendly match against Trinidad and Tobago and the 2014 World Cup Qualifiers against Curaçao, US Virgin Islands, and Antigua and Barbuda. He scored twice on his Haiti’s debut, as they won 7–0 against US Virgin Islands. A year later in September 2012, Goreux helped finished at top of the Group One of the Caribbean Cup qualification.
In October 2014, Goreux was called up to the squad for the Caribbean Cup qualification and appeared three times, as he helped Haiti qualify for the tournament. The following month, he was called up to the squad for the Caribbean Cup, appearing three times in the tournament. The following July, he was called up to the squad for the CONCACAF Gold Cup, appearing two times in the tournament.
In May 2016, Goreux was called to the Haiti’s squad for the Copa América Centenario and appeared two times in the tournament. The following March, he played in both legs against Nicaragua in the Gold Cup Play-Off, as Haiti lost 4–3 on aggregate, in what turns out to be his last appearance for the national side.
Réginal Goreux