γδ T lymphocytes are programmed into distinct IFN-γ–producing CD27+ (γδ27+) and IL-17–producing CD27− (γδ27−) subsets that play key roles in protective or pathogenic immune responses. Although the signature cytokines are shared with their αβ Th1 (for γδ27+) and Th17 (for γδ27−) cell counterparts, we dissect in this study similarities and differences in the transcriptional requirements of murine effector γδ27+, γδ27−CCR6−, and γδ27−CCR6+ γδ T cell subsets and αβ T cells. We found they share dependence on the master transcription factors T-bet and RORγt for IFN-γ and IL-17 production, respectively. However, Eomes is fully dispensable for IFN-γ production by γδ T cells. Furthermore, the Th17 cell auxiliary transcription factors RORα and BATF are not required for IL-17 production by γδ27− cell subsets. We also show that γδ27− (but not γδ27+) cells become polyfunctional upon IL-1β plus IL-23 stimulation, cosecreting IL-17A, IL-17F, IL-22, GM-CSF, and IFN-γ. Collectively, our in vitro and in vivo data firmly establish the molecular segregation between γδ27+ and γδ27− T cell subsets and provide novel insight on the nonoverlapping transcriptional networks that control the differentiation of effector γδ versus αβ T cell subsets.