Five bomb blasts took place in Delhi, India, killing at least 20 people as part of a series of attacks perpetrated by the Indian Mujahideen.

The 13 September 2008 Delhi bombings were a series of five synchronised bomb blasts that took place within the span of a few minutes on Saturday, 13 September 2008 at various locations in Delhi, India. The first bomb exploded at 18:07 IST, and four other blasts followed in succession, with at least 20 people killed and over 90 injured.

Indian Mujahideen (IM) is an Islamist Jihadist group which has been particularly active in India. The jihadist group was founded as an offshoot of the Students' Islamic Movement of India (SIMI) by several radicalized members including Iqbal Bhatkal, Riyaz Bhatkal, Yasin Bhatkal, Abdul Subhan Qureshi, Amir Reza Khan and Sadiq Israr Sheikh, among others. It has been active since at least 2005 when it bombed the Dashashwamedh Ghat in Varanasi. It carried out several serial-bombings in Indian cities in the following years notably the 2007 Uttar Pradesh bombings, 2008 Jaipur bombings, 2008 Ahmedabad bombings, 2008 Delhi bombings, 2010 Pune bombing, 2011 Mumbai bombings, 2011 Delhi bombing, 2013 Patna bombings, 2013 Hyderabad blasts and the 2013 Bodh Gaya bombings.