See here for Conditions to Enter Israel.
For a current list of tourist visa exempt countries, click on the link.
If you need a Visa click on this How to Apply link.
PLEASE THINK EARLY. IT WILL NOT BE POSSIBLE TO OBTAIN A VISA AT SHORT NOTICE. AT LEAST A MONTH IS REQUIRED TO OBTAIN A VISA.
IF YOU REQUIRE A LETTER OF INVITATION TO OBTAIN YOUR VISA, PLEASE CONTACT US BY EMAIL. THIS WILL ONLY BE SENT IF YOU HAVE PAID THE RELEVANT CONFERENCE REGISTRATION FEES.