Some of the most profitable industries in the world include:

Oil and gas
In 2024, the global oil and gas exploration and production industry is projected to have a revenue of $4,233.8 billion. Saudi Aramco, a Saudi Arabian oil company, generated over $247 billion in profits in 2023.
Life and health insurance
In 2024, the global life and health insurance carriers industry is projected to have a revenue of $5,531.9 billion.
Car and automobile sales
In 2024, the global car and automobile sales industry is projected to have a revenue of $4,357.5 billion.

Commercial real estate
In 2024, the global commercial real estate industry is projected to have a revenue of $4,329.8 billion.
Pension funds
In 2024, the global pension funds industry is projected to have a revenue of $4,253.6 billion.

Coal mining
In 2024, the global coal mining industry is projected to have a revenue of $2,542.6 billion.
Tourism
In 2024, the global tourism industry is projected to have a revenue of $2,029.7 billion.