The TI-30 is a scientific calculator manufactured by Texas Instruments. The TI-30 series calculators on sale today are direct descendants of the original TI-30. It is thought that the original TI-30 got its name from the retail price of $29.95 or $30. This was much less than half of what any other scientific calculator at that time was selling for. An example would be HP's cheapest scientific was still well over $100. This calculator introduced the average student to a scientific calculator.

Today the modern TI-30 series are fairly good, low-priced scientific calculators, with a fair number of functions for a calculators their price range. The series actually sets the bar and may still be TI's best sellers.