G4G may refer to:

• Gathering 4 Gardner, a United States-based non-profit organization that honors the life and works of Martin Gardner
• "Good for Google", a term used by Google recruiters or coordinators to describe the rational of what they are looking for when hiring

• Inverse CDF
• Inverse-chi-square distribution
• Inverse commons
• Inverse Compton emission
• Inverse consequence
• Inverse copular construction
• Inverse-cosh distribution
• Inverse cumulative distribution function
• Inverse different
• Inverse distribution
• Inversed ratio ventilation
• Inverse electron demand Diels-Alder reaction
• Inverse electron-demand Diels–Alder reaction
• Inverse energy cascade
• Inverse error function
• Inverse estuary
• Inverse function integration
• Inverse functions & differentiation
• Inverse Gaussian
• Inverse geodetic problem
• Inverse grading
• Inverse index
• Inverse interval
• Inverse Laplace transform of derivatives
• Inverse law of mixtures