The meaning of the Acronym RGS is...

RGS is

• Rio Grande Southern Railroad

More Meanings For RGS:

• Reflection Grating Spectrometer
• Rand Graduate School
• Regulator of G Protein Signaling
• R G S Energy Group, Inc.
• Regis Corporation
• Ruffed Grouse Society
• Real God Series
• Royal Grammar School
• Raffles Girls School
• Raffles Girls School (Secondary)
• Rickis Golden Star
• Rio Grande Southern Railroad

RGS is also in:

• Non-Profit Organizations
• NYSE Symbols
• Physics
• Physiology
• Railroads
• Religion
• Schools
• Sports
• Universities