Image Registration is a central task to different applications, such as medical image analysis, stereo computer vision, and optical flow estimation. One way to solve this problem consists in using Bayesian Estimation theory. Under this approach, this work introduces a new alternative, based on Particle Filters, which have been previously used to estimate the states of dynamic systems. For this work, we have adapted the Particle Filter to carry out the registration of unimodal and multimodal images, and performed a series of preliminary tests, where the proposed method has proved to be efficient, robust, and easy to implement.