1 Introduction to Hybrid Nanofluids2 Empirical Correlations for the Estimation of Thermophysical, Friction Factor, and Heat Transfer Properties of Hybrid Nanofluids; 3 Synthetic Routes of Various Water-Based Hybrid Nanofluids and Their Thermal Conductivities; 4 Hybrid Nanofluid Heat Transfer in an Inclined Saturated Porous Cavity: An Experimental Study; 5 Effects of Different Shapes of the Porous Cavity on Natural Convective Heat Transfer of Hybrid Nanofluids: Experimental Study; 6 Hydrothermal Performance of Magnetized Al2O3-TiO2-Water Hybrid Nanofluid Flow within a Triangular Enclosure with a Circular Heater: A Multiple Linear Regression Analysis; 7 A Numerical Study of Micropolar Hybrid Nanofluid Flow over the Wedge with the Impacts of Hall and Ion Slip Using PINN; 8 Heat Diffusion in Non-Newtonian Magnetized Hybrid Blood Flow over a Wedge-Shaped Region; 9 Sensitivity Analysis in Hybridized Casson Nanofluid Near a Perforated Riga Plate; 10 Characteristic of Heat-Induced Ferrofluid Flow on a Riga Sensor Plate with the Effect of Viscous Dissipation; 11 Impact of Thermal Radiation on Electrically Conducting Hybrid Nanofluid Flow through an Expanding/Contracting Wedge Surface with Heat Generation; 12 Mixed Convection of Variable Viscosity Hybrid Nanofluid within Two Inclined Concentric Pipes; 13 Computational Study of Heat Transfer in Sisko Hybrid Nanofluid Flowing over a Radially Stretching Disc; 14 Influence of Slip Mechanisms and Suction on Hybrid Nanofluid Flow via a Stretching Cylinder with Heat Generation; 15 Study on Effects of Uncertain Volume Fraction on Hybrid Nanofluid Flow Using the Homotopy Analysis Method; 16 Marangoni Boundary Layer Flow of an Electrically Conducting Hybrid Nanofluid for the Impact of Particle Shape and Thermal Radiation; 17 Legendre Wavelet Collocation Approach to Simulate Hybrid Nanofluid Flow with Ohmic Heating and Viscous Dissipation under Magnetic Field; 18 Numerical Study of Magnetized Hybrid Nanofluid Flow over a Stretching Sheet