Since siblings have an insurable interest in one another, they meet the requirement for buying life insurance on another person.
However, you may need your sibling's approval, and signature on the application for insurance, depending on the requirements of the insurance company.
Many people buy funeral insurance on a sibling who may be unable to afford the coverage, or if they are the guardian of their sibling.
However, there are other reasons you may wish to insure your sibling for funeral coverage.
Learn more about purchasing funeral insurance on a sibling.