Neutropenia, a problem that oncology nurses face in daily practice, is the major dose-limiting toxicity in patients with cancer who are treated with myelosuppressive chemotherapy. The incidence of chemotherapy dose reductions or treatment delays, which can impact overall dose intensity and compromise treatment outcomes, may be reduced by the proactive use of granulocyte colony-stimulating factor (G-CSF). National and international guidelines have been developed to promote the cost-effective use of G-CSF. Nursing care protocols for the management of chemotherapy-induced neutropenia (CIN) can be developed based on the national guidelines and modified for use by individual clinical practices. Risk assessment for CIN, which considers the prescribed chemotherapy regimen, patient risk factors, and treatment intent, should be a key component of the practice guidelines. Because most neutropenic events occur in the first cycle of chemotherapy, risk assessments should be conducted before the initiation of chemotherapy. Patients identified as at high risk for neutropenic complications should be given G-CSF in the first and subsequent cycles to allow the delivery of chemotherapy at full dose and on schedule. Nurses are instrumental in the development and implementation of neutropenia management protocols, which have the potential to markedly improve the quality of care and outcomes for patients with cancer.