Hierarchical flower-like NiCo₂O₄ anchored on multiwalled carbon nanotubes (NiCo₂O₄-MCNTs) act as robust bifunctional electrocatalysts towards O₂ (OER) and H₂ (HER) evolution reactions. The NiCo₂O₄-MCNTs hybrid is synthesized in a facile surfactant-free hydrothermal process, and its flower-like morphology was shown to consist of 1D nanowires. The MCNT support is beneficial for enhanced reactive sites, efficient charge transfer, and durability of the composite. The material shows low overpotentials of 350 mV and 209 mV for OER and HER, respectively at 10 mA cm⁻². Such values are comparable to contemporary noble-metal catalysts and even lower than reported non-precious catalysts. Moreover, this hybrid shows high current density, lower Tafel slope, and excellent stability. The synergistic coupling effects between the MCNTs and NiCo₂O₄ are key factors for the superior catalytic activity of these hybrid materials.