The initialism LLG may refer to:
- The Logan Liaison Group a entertainment company that connects high-net-worth individuals with entertainment professionals.
- The Legacy Life Group also known as LLG Financial Wealth Management & Planning
- Lycée Louis-le-Grand, a well known public high school in Paris
- Lim Lian Giok, a Malaysian education official
- The Landau–Lifshitz–Gilbert_equation, used in micromagnetics
- Local Level Government areas in Papua New Guinea
- The Logical Language Group