PURPOSE: Previous acute exercise research has demonstrated better performance for tasks requiring cognitive control following exercise. However, our knowledge base regarding other areas of cognition remains limited. Specifically, no prior research has investigated the effect of acute exercise on the temporal dynamics of visual attention. Therefore, the current study examined the effect of a single bout of exercise on temporal attention. METHODS: A within-subjects design included 31 young adults (age = 20.3 ± 0.4 years; 14 females) to assess exercise-induced changes in performance during an attentional blink (AB) paradigm. Participants completed a VO2 max test to determine their cardiorespiratory fitness. On subsequent days, task performance was collected while participants complete an AB task before (i.e., baseline) and after an intervention consisting of 20 minutes of either aerobic exercise (60-70% of maximal heart rate) or a seated rest control. Analysis of AB task performance (i.e., T1|T2 response accuracy) was performed using a 2 (time: pretest, posttest) × 2 (condition: exercise, rest) × 8 (lag: lag1, lag2, lag3, lag4, lag5, lag6, lag7, lag8) repeated measures model. RESULTS: A time × condition × lag interaction was observed, F(7, 210) = 2.5, p = .018, η2p = .08. Post hoc analyses indicated that relative to task conditions within the attentional blink windows (i.e., Lag3, Lag4, and Lag5), the exercise condition exhibited improvements in T1|T2 accuracy from pretest to posttest, ts(1, 30) > 3.1, ps ≤ .004, while no such effect was observed for the rest condition, ts(1, 30) < 0.5, ps ≥ .62. CONCLUSIONS: These findings indicated that single, acute bouts of moderately-intense aerobic exercise (i.e. walking) may improve temporal attention, and further support the use of moderate acute exercise as a contributing factor for increasing attention.