The study that we will present is a systematic approach to the expression of the impersonal human reference in French sign language (LSF). It extends and deepens a prior study carried out by the authors on the basis of a large scale discourse corpus (L’Huillier et al 2016). The description proposed here is based primarily on data elicited through a specialised questionnaire on impersonal human reference (‘TypoImp questionnaire’, Barberà & Cabredo-Hofherr 2018), initially developed for spoken languages (SpLs) and adapted for sign languages (SLs).