Rubaiyat may refer to: 1  Ruba'iyat, a collection of Ruba'i (a form of Persian poetry). 2  The best-known example of such a collection is the Rubaiyat of Omar Khayyam, to the extent that Rubaiyat is often used as a short name for this particular collection.3  There are also rubaiyats by Jalal ad-Din Muhammad Balkhi-Rumi. Ruba'iyat, a collection of Ruba'i (a form of Persian poetry). 2  The best-known example of such a collection is the Rubaiyat of Omar Khayyam, to the extent that Rubaiyat is often used as a short name for this particular collection.