Meniran is an Indonesian herbal plant which has health benefits due to its bioactive compounds. It can be applied to food product, whey protein isolate, were easily absorbed for body. The purpose of this research was to determine the effect of meniran extract addition to nano whey protein isolate on viscosity, foam overrun, foam stability and foam’s microscopic. Data collection method was laboratory experiment with 4 treatments of different meniran extract addition levels which consisted of P0 (without meniran extract), P1 (30 ug/mL), P2 (60 ug/mL) and P3 (90 ug/mL) which repeated 3 replications respectively. Experiment was designed by Completely Randomized Design (CRD). The data was analyzed using Analysis of Variance (ANOVA), if there were significantly differences, it would be continued by Duncan Multiple Range Test (DMRT). The results showed that meniran extract addition to nano whey protein isolate gave significant effect (P<0.05) on viscosity. However, there was no effect on foam overrun and stability. It is concluded that the addition of meniran extract P3 (90 ug/mL) to nano whey protein isolate resulted in viscosity and foam’s microscopic (stable, uniform and thick).