The answer is more complicated than "No, there is no way".
There is no guaranteed way. You may need to create a PayPal account, and it is recommended that you do so. All you need is an email address to sign up, and you will have more protections this way.
However, if you really want to try paying as a guest (not recommended), you can do so in various ways -- most directly with a link like this (which you will need to edit to suit the recipient, item, and purchase amount):
https://www.paypal.com/webscr?cmd=_xclick&business=THEIREMAILGOESHERE@DOMAIN.COM&item_name=WHAT_YOU_ARE_BUYING&amount=777.88¤cy_code=USD
This simulates a "Buy Now"-style button. If the seller has an account in a country that allows payments from a guest, and you have an IP address in a country that allows paying as a guest, and many other anti-fraud criteria are met, you may be able to pay as a guest.
It is not recommended that you pay as a guest. Just sign up for a personal PayPal account, since having one is useful, painless, and gives more protections to you.