Background & Objectives: Aphasia is an acquired language disorder that affects daily communication and quality of life. Early diagnosis and the treatment of aphasia are important. In this regard, one of the screening tests is the Aphasia Rapid Test (ART). This study aimed to investigate the validity and reliability of this test and extend the use of ART in the acute phase for patients with aphasia. Methods: The original version of ART was translated to Persian and 100 acute stroke patients were evaluated by ART. Besides, all the patients were assessed again after eight days by two independent raters to evaluate inter-rater reliability. Also, 70 patients were chosen to examine ART’s predictive ability; they were assessed using the Persian version of Western Aphasia Battery, after three months. Results: On day eight of the study, the Mean±SD ART was 11.26±2.03 for rater 1 and 11.44±2.04 for rater 2. Inter-rater reliability was good with the concordance correlation coefficient of 0.959 (95% CI: 0.939-0.972). Also, the Bland-Altman plot showed good agreement between raters without any significant trend/bias. Conclusion: The ART is a test that includes features, such as reproducibility, predictability, and inter-rater reliability. This test is short and can be used in the acute phase of aphasia in patients with stroke.