Mujaddid Ahmed Ijaz, Ph.D. (Urdu: مجدد احمد اعجا ز; June 12, 1937 – July 9, 1992), was a Pakistani-American experimental physicist noted for his role in discovering new isotopes[1] that expanded the neutron-deficient side of the atomic chart.

[4] The program provided a number of third-world countries, including Pakistan, with civilian nuclear reactor technology to develop energy for peaceful purposes.

Ijaz made extensive trips abroad during his career, including sabbaticals as a visiting professor at Saudi Arabia's King Fahd University of Petroleum and Minerals.

He continued advanced studies under the tutelage of Prof. Rafi Muhammad Chaudhry, widely considered a pioneer in Pakistani experimental physics, until 1959 when he met Razia Begum Nazir.

[15] In his early years as a faculty member, Ijaz devoted much of his time to his teaching responsibilities,[16] including acting as adviser to the university's roster of graduate students and doctoral candidates.

[1] In 1974, Ijaz launched a Distinguished Visitors Colloquium Series under the Physics department's sponsorship that brought world-renowned physicists to the Blacksburg campus for nearly a decade.

Visiting scholars included Salam, Sheldon Glashow, and Nobel physics laureates Hans Bethe, Robert Hofstadter, Eugene Wigner and Richard Feynman.

Noted Chinese physicist Luke W. Mo (whose group at the Stanford Linear Accelerator had won the Nobel Prize in Physics in 1990) also lectured at Virginia Tech.

[25] Mujaddid Ijaz began his research work at the Oak Ridge National Laboratories (ORNL) in 1966 under Virginia Tech funding contributed to the UNISOR program.

[38] In December 1982, physicists at the University of Arizona used the mercury isotopes discovered by Toth, Ijaz et al. to successfully model behavior expected of heavier particles than traditional accelerator experiments could produce at the time due to energy limitations.

[39] During the 1970s, Ijaz participated[4] in the Atoms for Peace initiative created by President Eisenhower in 1953 to help the post-World War II international community cope with nuclear power.

Most notable among these were his collaborations with Abdus Salam[43] whose groundbreaking work in electroweak interactions together with American physicists Steven Weinberg and Sheldon Glashow earned them the Nobel Prize in Physics in 1979.

[5] He was buried in traditional Muslim rituals at the site of his most favored farm in Alum Ridge, surrounded by a large gathering of his family from around the United States and his physics colleagues and friends from southwestern Virginia.