**Abstract**

Terpenes are the largest group of plant secondary metabolites with many biological activities, such as anticancer, antimicrobial, anti-inflammatory, antifungal, and antiviral. They are natural plant products frequently used in many sectors, such as medicine, agriculture, and perfumery. Various biotechnological strategies have been developed to increase terpene production and variety in plants. Among these approaches, using stimulants that induce *in vitro* accumulation of plant secondary metabolites, such as elicitor, is one of the best alternatives. Successful effects of salt (NaCl), an abiotic elicitor, on terpene production in different plant species have been reported. This technique remains relevant as a promising approach to the yet unknown chemistry of many plant species. Therefore, this review aims to appraise the literature available for using NaCl stress as an elicitor in *in vitro* cultures to increase terpene compounds in plants.

**Keywords:** *in vitro*, salt stress, elicitor, terpene production, NaCl
