Program S2 UIN Syarif Hidayatullah Jakarta (1992), 

Program S3 UIN Syarif Hidayatullah Jakarta (1999). 

Selain itu, Prof. Dr. Nasaruddin Umar, MA juga pernah mengikuti sejumlah studi dan riset, antara lain: Visiting Student di Mc.Gill University, Canada (1993/1994), Visiting Student di Leiden University, Belanda (1994/1995), Sandwich Program di Paris University, Perancis (1995), Penelitian Kepustakaan di beberapa Perguruan Tinggi di Kanada, Amerika Serikat, Jepang, Inggeris, Belanda, Belgia, Italia, Ankara, Istanbul, Sri Lanka, Korea Selatan, Saudi Arabia, Mesir, Abu Dhabi, Yordania, Palestina, Singapore, Kuala Lumpur, dan Philipina (1994-1996).

Prof. Dr. Nasaruddin Umar, MA juga pernah mengikuti Visiting Scholar di Sophia University, Tokyo, Jepang (2001), Visiting Scholar di SOAS University of London, UK, (2002-2003), Visiting Professor di Georgetown University, Washington DC, USA, (2003-2004).

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