[en] The high-spin states formed in ³⁸Ar following the fusion of ¹⁴N, ¹⁶,¹⁸O, and ¹⁹F projectiles with targets of ²⁶Mg, ²⁷Al, and ²⁸Si have been investigated. Angular distribution, linear polarization, and γ-γ coincidence data on the γ rays emitted by these states were utilized to construct a decay scheme for ³⁸Ar, and to suggest probable spin-parity assignments for several new high-spin states. Results of lifetime measurements for several of these states are presented, and a comparison of the experimental level energies to the predictions of a simple weak-coupling calculation and a large-basis shell model calculation is given