The news comes three months after Google's Android Pay service added support for PayPal, while last week Apple revealed that you could now pay for digital goods through Apple's own stores using PayPal - but it stopped short of supporting PayPal payments through Apple Pay itself.
USA customers will receive the payment option now through an update, and Samsung hopes to spread the service to further geographic markets soon.
Initially, access to PayPal payments will be limited to Samsung Pay users in the USA, but it will be extended to other markets shortly.
Coming soon, consumers in the USA will be able to use PayPal within Samsung Pay at millions of retailers. A year ago alone, PayPal processed $102 billion in mobile payment volume and two billion mobile payment transactions. Today, it's adding something that isn't a card-PayPal accounts. In April, PayPal announced a deal with Android Pay that's almost identical to the one it just made with Samsung. PayPal has similar partnerships with Visa and MasterCard, as well as deals with Citi, FIS, and Facebook, among others.
PayPal and Samsung have had a strong partnership for several years now.
The partnership method is also key to Samsung's strategy with Samsung Pay.
PayPal is focused on delivering seamless mobile commerce experiences and extending this reach through strategic partnerships.