1. Entry to Turkey by taking an E-Visa such as the citizens of the United States of America, China, Mexico, Canada, and many others.
From the official website you can obtain your E-Visa: https://www.evisa.gov.tr

2. Visa Free travel for a period of 90 days /180 days for countries such as Bulgaria, Switzerland, Argentina, Iran, and many others.
Visa Free travel for a period of 30 days for countries such as Turkmenistan, Costa Rica And others.

3.Entry to Turkey with an entry visa that is taken by the closest Turkish consulate to the coming person and this includes many nationalities such as most African countries, India, Pakistan, Afghanistan, Syria, Iraq, North Korea, and many others.

For more information visit: https://www.mfa.gov.tr/visa-information-for-foreigners.en.mfa