P.S.S. (disambiguation)

P.S.S. may refer to:
 * The enemies in Xenosaga Episode II:
 * P.S.S. - A (XS2)
 * P.S.S. - B (XS2)
 * P.S.S. - B2
 * P.S.S. - C (XS2)
 * P.S.S. - F
 * P.S.S. - P (XS2)
 * P.S.S. - P2 (XS2)
 * P.S.S. - S
 * The enemies in Xenosaga Episode III:
 * P.S.S. - A (XS3)
 * P.S.S. - B (XS3)
 * P.S.S. - C (XS3)
 * P.S.S. - P (XS3)
 * P.S.S. - P2 (XS3)