Yes, you can pursue an M.Sc. in Computer Science after completing your MCA (Master of Computer Applications). Both degrees are in the field of computer science, and having an MCA typically gives you a strong foundation in programming, software development, and related areas.

Here are a few things to consider:

1. Eligibility : Most universities accept candidates with an MCA for M.Sc. Computer Science programs, but you should check the specific eligibility criteria of the university or institution you are interested in.

2. Advantages : Pursuing an M.Sc. in Computer Science after MCA can deepen your knowledge in specific areas of computer science, such as algorithms, data science, artificial intelligence, or networking, depending on the program's focus.

3. Career Prospects : While MCA is often seen as a professional degree leading directly to industry roles, an M.Sc. might provide more opportunities in research, teaching, or specialized areas of technology.

Before applying, consider your long-term career goals and whether an M.Sc. aligns with them. If your goal is to gain more specialized knowledge or move into a research or academic role, an M.Sc. could be a good choice.