You need a visa for Zambia if you have a Brazilian passport
Visa options for Zambia (3)
Electronic visitor visa (KAZA) for Tourism between Zambia and Zimbabwe
The KAZA UNIVISA is for travelers visiting Zambia and Zimbabwe for tourism during one trip. You can travel freely between these two countries, entering and exiting each country multiple times. Travelers must start your trip in Zambia if they apply through the Zambian government. The visa becomes invalid if you travel outside of these countries. An eVisa is the fastest and easiest way of obtaining a visa as you can submit an application and supporting documents online. If approved, you'll receive your eVisa confirmation electronically. When you arrive at immigration, you will be asked for your passport and eVisa to ensure you have proper documentation. Entry to Zambia with a KAZA UNIVISA is supported at 2 airports, and 2 land borders. See the government site for more details.
Electronic visitor visa for Zambia
Travelers need a visa to visit Zambia for Business or Tourism. A Zambia eVisa is the fastest and easiest way of obtaining a visa for Zambia because travelers can submit their application and supporting documents online. Once the application is approved, travelers receive their eVisa confirmation electronically.
Visa on arrival for a maximum of 90 days for Zambia
Travelers need a visa to visit Zambia for Business or Tourism. Travelers can get a visa on arrival in Zambia at the port of entry, such as an international airport or border crossing.