Citizens of Czechia are required visa for entering Vietnam.

Under a government directive released in January 2017, citizens from 40 countries will be eligible to apply for the e-visa (30 days, single entry), including citizens of Czech Republic. Citizens of Czechia now can apply online for e-visa of Vietnam at the official website of the government of Vietnam.

What if I want to stay in Vietnam for more than 30 days or want to visit the country multiple times?

In case you want stay more than 30 days or want multiple entry visa for Vietnam, you are advised to choose to contact with a travel company in Vietnam to ask for arrangement from them then pick up your visa on arrival. There is a visa issuing office located at the international airport where you can show the visa approval letter (pre-arrangement) to pick up your visa there.