Halluin (French pronunciation: [alɥɛ̃]; Dutch: Halewijn) is a commune in the Nord department in northern France.

In 1587 the title of duke and peer of the realm was granted to it, but in the succeeding century it became extinct.

However, since the 1990s Halluin has become gentrified (see also below), and in the 2007 and 2012 presidential elections the town backed Nicolas Sarkozy.

Despite the noted gentrification of Halluin, the neighbouring town of Menen, Belgium, situated within walking distance of central Halluin, underwent a simultaneous radicalization, given the municipality's attempts to ban its employees from speaking French to Francophone people whose command of Dutch may be limited, and to use sign language instead.

While some townsfolk of Halluin's adjoining conurbation may have regarded this as a brave attempt to enforce Flemish supremacy over Francophone neighbours, others, including Francophone neighbours themselves, and international observers may have regarded such a measure as allegedly fanatical and insensitive to the needs of Francophone neighbours with limited command of Dutch.