Who is the founder of economics?

Xenophon was the first to put forward the concept of economics. Monklechin first put forward the concept of political economy.

The acknowledged originator of economics is Adam Smith, represented by The Wealth of Nations, who is known as the father of modern economics.

There are also schools, mainly: Adam Smith, classical economics; Al flood Marshall, neoclassical economics;

Keynes: Macroeconomics is marked by his General Theory of Employment, Interest and Money, but he is not a Keynesian himself.

New Institutional Economics: ronald coase's Masterpieces The Essence of Enterprise and The Cost of Society.

Development Economics: (as mentioned above) Zhang, the representative work of agriculture and industrialization.

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According to the meaning of the question, probably the answer you want is Adam Smith.