The object of the present paper is to study a quarter-symmetric metric connection in a Lorentzian α-Sasakian manifold. We study some curvature properties of Lorentzian α-Sasakian manifold with respect to quarter-symmetric metric connection. We investigate quasi-projectively flat, ϕ-symmetric, ϕ-projectively flat Lorentzian α-Sasakian manifolds with respect to quartersymmetric metric connection. We also discuss Lorentzian α-Sasakian manifold admitting quarter-symmetric metric connection satisfyingP .S = 0, whereP denote the projective curvature tensor with respect to quarter-symmetric metric connection.2010 Mathematics Subject Classification. 53C25. 53C15 Keywords. Quarter-symmetric metric connection, Lorentzian α-Sasakian manifold, quasi-projectively flat Lorentzian α-Sasakian manifold, ϕ-symmetric manifold, ϕ-projectively flat Lorentzian α-Sasakian manifold.