Methods, systems, and apparatus, including computer programs encoded on one or more computer storage devices, for grouping search query refinements. One of the methods includes while receiving a text input into an input field by a user and before the user has submitted the text input to a search engine obtaining query suggestions based at least in part on the text input. The method includes grouping query suggestions based on a common query term shared by the query suggestions, wherein the query suggestions include terms that refine the common query term. The method includes transmitting a set of query suggestions to a client device for presentation, wherein the set includes the query suggestions that are presented as a group with the common query term presented in a prominent position and the refinement terms presented in subordinate positions and wherein the common query term and the refinement terms are each user-selectable.