Owen Equipment & Erection Co. v. Kroger, 437 U.S. 365 (1978), is a case that was decided by the United States Supreme Court regarding the civil procedure subject of ancillary jurisdiction.

[1] Respondent Kroger, a citizen of Iowa, filed suit against the Omaha Public Power District (OPPD), a Nebraska utility company.

Following a jury verdict in favor of the plaintiff, the federal district court in an unreported decision denied the motion to dismiss on diversity grounds.

Justice White dissented, stating that the majority overlooked such factors as convenience, judicial economy, and considerations of fairness in order to rigidly uphold legislation.

The Supreme Court six years earlier had mentioned the circumstances of Carter Lake when it ruled on a boundary dispute between the two states in Nebraska v. Iowa, 406 U.S. 117 (1972).