Background: Internet use expanses from day-to-day necessities to morbid levels. More emphasis is now being given to online services during this current pandemic situation. Internet use is acting as double-edged sword. This study was aimed to know the perceived stress and Internet addiction among the students pursuing professional courses during the lockdown of corona pandemic in India. Aim: The aim was to assess the perceived stress and Internet addiction during the lockdown among professional students. Methodology: A cross-sectional study for students perusing professional courses of different streams through an online survey was carried. During the lockdown, a Google form was created for students with proper information about the questionnaire with the request for participating in the research. Survey contained a total of 38 questions. After taking informed consent, sociodemographic proforma, perceived stress scale, and Internet Addiction Test were applied. Result: A total of 297 students from various professional courses participated in the study. A total of 62.2% of them were reported that their time for Internet use has increased significantly. Maximum (84%) participants reported high level of perceived stress and 62% of them were using Internet up to a moderate level of addiction. Positive correlation was present between perceived stress and Internet addiction. Conclusion: Lockdown restrictions increased the perceived stress and vulnerability of Internet addiction among the students.