Courses in agriculture will begin soon, the agency said in a statement.
"These four sectors account for roughly 39 percent of all jobs in Sri Lanka."
It is also giving training in information and communication technology (ICT) as Sri Lankan companies require a workforce with strong IT skills to compete globally.
"We are extremely pleased to provide 500 young people with the opportunity to upgrade their technology skills and find good jobs that will bring them financial independence," said USAID Mission Director Rebecca Cohn.
"A USAID-funded study showed that the demand for ICT graduates is greater than the supply.
"By training more young people with ICT skills, we can help Sri Lankan businesses be more competitive and support economic development in the East and North, which will benefit the youth, their families, and their communities."
The UPP aims to establish its specially-designed ICT curriculum in more than 40 training centers across Sri Lanka, where it will train at least 11,250 people by February 2010.
A total of 2000 scholarships will be available throughout Sri Lanka, with USAID providing 500 scholarships to youth in the east and north.
The north and east regions have been cleared of Tamil Tiger guerrillas after a lengthy military campaign.
The government says it wants to revive the region's economy as it is confident of ending the ethnic war with the Tigers now cornered on a small strip of land on the north-east coast.
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