Universal Migrator Part 1: The Dream Sequencer (sometimes simply referred as The Dream Sequencer) is a progressive rock album released in 2000 by Dutch multi-instrumentalist and songwriter Arjen Lucassen, and is the fourth album of his Ayreon project.

The Dream Sequencer features a musical style quite disparate from its counterpart Flight of the Migrator, telling the story of a trip through time from a variety of perspectives, it features a prog-infused atmospheric feeling, with a softer and more melodic sound than that of Flight of the Migrator.

Both albums were released simultaneously, sold well and were received positively. In 2004, Lucassen moved to a new record label - Inside Out Music - and with this move came re-issues of all the previous Ayreon releases, including The Dream Sequencer. The special edition re-issue merged both albums into a single release, titled Universal Migrator: Parts I & II. The album was also released on vinyl in December 2012.