The Swiss company is the world's biggest food company and a huge consumer of cocoa in the Ivory Coast.
The training will include advice on career schemes, interview guidance and CV workshops.
Nestle added it will advertise the training on its websites, in schools and universities.
“We’re going to create more than 3,000 internships and apprenticeships in African countries by the end of 2018,” said chief executive officer Paul Bulcke at the economic conference in the Ivory Coast city of Abidjan.
“During the same period, we will offer qualified work experience to more than 300,000 youths.”
The Nestle global forum was the first conference of its kind in Africa organised by the company.
Nestlé is also developing initiatives to encourage youth entrepreneurship across Africa, especially for women.
For instance, the ‘My Own Business’ program is providing thousands of people in Africa and Asia with the tools and expertise they need to run small businesses.
Nestlé said its commitment to youth in Africa, Asia and Oceania is part of the Nestlé Needs Youth initiative.
This was expanded around the world in 2015 to assist a broad range of young people to develop skills and acqurie jobs.
Meanwhile, the global tech company Google recently promised
to train one million young Africans in digital skills within the next year.
The training will involve 300,000 people in South Africa, where 35% of 15-to-34-year-olds are unemployed.
It will also comprise 400,000 Nigerians and 200,000 Kenyans who will receive free digital training. A further 100,000 people will be chosen from other sub-Saharan African countries.
Google pledges to train 1 million Africans
Nestle will offer on-the-job training to 300,000 African youths to help reduce the continent's high unemployment rate.