Background: The lifestyle and long-term use of communication technologies have led to the prevalence of neck pain and concurrent forward head posture (FHP), Rounded shoulder posture (RSP), and hyperkyphosis (HK) deformities. The present study aimed to determine the effects of the eight-week water–based corrective exercises on FHP, RSP, HK deformities, and neck pain. Methods: After screening the 200 students, 30 students with FHP, RSP and HK were selected. They were assigned randomly to experimental (n=14) and control (n=16) groups. Imaging from lateral view and AutoCAD software were used to evaluate the FHP and RSP angles and HK was measured by flexible ruler. Moreover, Visual Analog Scale (VAS) was used to assess shoulder, and neck pain. These variables were assessed before and after 8-week intervention period. Results: statistical analysis indicated a significant group by time interaction in the FHP (P=0.001), RSP (P=0.001), HK (P=0.001) angels and in terms of the pain (P=0.001) which indicated a decrease in kyphosis and forward head angels, and Rounded shoulder displacement. But no significant decrease was observed in control group measures (all P>0.05). Conclusions: Based on the results, probably performing 8-week corrective exercises in the water environment could have more effect on FHP, RSP, HK angels decreasing and neck and shoulder pain reduction. This corrective exercises protocol can be suggested to professionals in order to correct these concurrent malalignments. Trial registration: The protocols were also registered in the Iranian Registry of Clinical Trials (Registration no.: IRCT20170615034554N2). https://www.irct.ir/trial/26381. 2018-05-07.