Insurance Company v. Weide was a case heard by the United States Supreme Court in 1869. The case involved a dispute between an insurance company and a policyholder over the validity of a life insurance policy. The policyholder, Weide, had purchased a life insurance policy from the insurance company, but the company refused to pay out the policy when Weide died. The insurance company argued that the policy was invalid because Weide had failed to disclose a pre-existing medical condition at the time of purchase. The Supreme Court ruled in favor of Weide, finding that the insurance company had failed to prove that Weide had deliberately withheld information about his medical condition. The Court held that the insurance company had a duty to investigate the facts of the case and that it had failed to do so. The Court also held that the insurance company had failed to prove that Weide had acted in bad faith in not disclosing his medical condition. As a result, the Court ruled that the insurance company was liable to pay out the policy.

In Insurance Company v. Weide, the Supreme Court was tasked with determining whether a policy of insurance issued by an insurance company to a shipowner covered losses resulting from the capture of his vessel during war. The majority opinion held that such coverage did not exist under the terms of the policy and thus denied recovery for damages caused by war-related events. However, in dissent Justice Field argued that while it is true that most policies do not cover losses due to war or other similar occurrences, this particular policy contained no express exclusion for these types of risks and therefore should be interpreted as providing coverage against them. He further noted that if insurers wish to exclude certain risks they must make those exclusions clear in their policies so as to avoid any ambiguity or confusion on behalf of their customers regarding what is and isn't covered under their contracts.