French Sign Language is the sign language of deaf and hard-of-hearing people in France and in French-speaking parts of Switzerland. According to Ethnologue, it has 100,000 native signers.
French Sign Language is related and partially ancestral to Dutch Sign Language (NGT), Flemish Sign Language (VGT), Belgian-French Sign Language (LSFB), Irish Sign Language (ISL), American Sign Language (ASL), Quebec (also known as French Canadian) Sign Language (LSQ), Brazilian Sign Language (LSB or Libras) and Russian Sign Language (RSL).