  In this paper, we analyze a few physical characteristics of gravastar with
cylindrical geometry in $f(R,T)$ theory, where $R$ is the Ricci scalar and $T$
is the trace of energy-momentum tensor. The gravastar is generally considered
to be a substitute of a black hole with three different regions. In the present
work, we examine the formulation of gravastar-like cylindrical structures in
$f(R,T)$ theory. By using Darmois and Israel matching conditions, we formulate
a mass function of a thin shell. We calculate the different physical
characteristics of gravastar, in particular, entropy within the thin shell,
proper length of the intermediate thin shell as well as energy of the shell.
