Increasing numbers of patients with cancer are being cared for by home caregivers. The primary purpose of this methodologic, correlational study was to identify, categorize, and assess the importance of needs expressed by 492 home caregivers and to determine how well these needs were satisfied. Caregivers surveyed were selected from the records of two nonprofit community cancer agencies and two hospital outpatient oncology clinics in the Midwest. These individuals were identified by at-home patients with cancer as unpaid people who helped with physical care or coping with the disease process. Caregiver characteristics and patient activity were examined to determine their relationships to caregiver needs, and needs were examined over time. The 90-item Home Caregiver Need Survey used in this study was developed by the author in 1989 and demonstrated internal consistency, reliability, and construct validity. Using factor analysis, six need categories were identified: psychological, informational, patient care, personal, spiritual, and household. Caregivers' greatest needs were informational and psychological. Significant correlations between certain caregiver characteristics and caregiver needs and between caregiver needs and patients' activity levels were found. Both the importance and satisfying of needs changed over time. Findings indicate the urgent need for nurses, who usually provide support for caregivers, to establish specific programs and services to meet the identified and unmet informational and psychological needs of caregivers of at-home patients with cancer. Frequent reassessment of caregiver needs seems to be indicated.