Indo-German Research Collaboration: A Quantitative Analysis of the Research Publications During the Last Three Decades

India’s international research collaborations have evolved significantly over the past 30 years. They have become bigger and varied, and India is now interacting with a wide variety of countries than earlier. This paper explores Indo-German research collaboration from 1990 to 2020 to learn how this long-term relationship has progressed, particularly in the context of growth and expansion of Indian research collaborations. Even though Indo-German publications have gained in numbers, they have lost their proportion in the total international cooperation in India. This indicates that India has now expanded its number of scientific partners in North America, East Asia, Middle East, and Europe. The collaboration between India and Germany over time has expanded into many more research fields. It now covers more than 170 Web of Science (WoS) subject categories, although the strongest activity continues to be in Physical Sciences, Life Sciences, and Technology. Over the period, the leadership role of Indian researchers in these collaborated publications has reduced. This is evident in the declining share of Indian first authors and a smaller proportion of papers that include a majority of Indian authors. Citation analysis reveals that Indo-German collaborations yield substantially higher impact compared to India’s indigenous publications and other international partnerships, highlighting the strategic value of this bilateral relationship. These patterns suggest the need for targeted policy interventions to strengthen India’s domestic research capacity, promote more balanced authorship and institutional participation, and leverage Indo-German collaboration in areas that provide clear impact advantages. The broader implication is that India’s global research partnerships are becoming increasingly multipolar, and strategic choices will be essential to sustain both the quality and influence of its international scientific engagement.