Recent studies on reading speed are reviewed. Reading speed has been investigated through many different viewpoints. This article classified them into six categories. (a) Reader's purpose is supposed to affect their reading speed. It is hypothesized that controlled processes are important in fluent reading through the efficient use of strategic processes of reading. (b) Reading speed is related to the reader's eye movement pattern. Some studies suggested that reading speed is related to saccadic sizes and fixation durations. (c) Recently, it has been hypothesized that the size of the visual span imposes a fundamental limit on reading speed. (d) Some studies focused on information processing in the peripheral visual field, such as optimal viewing position effect. (e) Reading speed is also related to working memory capacity. (f) The neural activations are measured along with reading speed. Some studies suggested that the trained readers could read sentences with fewer phonological processes.