<P><B>Highlights</B></P><P>► Maximum sugar yield was 0.685g/g of pretreated biomass. ► Ethanol yield was 11.365g/L from 5.5% initial sugar level. ► First report on bioethanol production from sugarcane tops.</P> <P><B>Abstract</B></P><P>The aim of this work was to study the feasibility of using sugarcane tops as feedstock for the production of bioethanol. The process involved the pretreatment using acid followed by enzymatic saccharification using cellulases and the process was optimized for various parameters such as biomass loading, enzyme loading, surfactant concentration and incubation time using Box–Behnken design. Under optimum hydrolysis conditions, 0.685g/g of reducing sugar was produced per gram of pretreated biomass. The fermentation of the hydrolyzate using <I>Saccharomyces cerevisae</I> produced 11.365g/L of bioethanol with an efficiency of about 50%. This is the first report on utilization of sugarcane tops for bioethanol production.</P>