The idea of statistical convergence was introduced by Fast [H. Fast, Sur la convergence statistique, Colloq. Math. 2 (1951) 241{244] afterwards studied by many authors. In [J.A. Fridy, C. Orhan, Lacunary statistical convergence, Pacific J. Math. 160 (1993) 43{51], Fridy and Orhan proposed the concept of lacunary statistical convergence. In present paper, we introduce lacunary statistically convergent in neutrosophic normed space (brifly, NNS). We dfine the concept of lacunary statistical Cauchy sequence in NNS and derive the relation between statistical completness and completeness in NNS . We give some basic properties of these concepts. [ABSTRACT FROM AUTHOR]