Daniel B. Szyld (born 1955 in Buenos Aires) is an Argentinian and American mathematician who is a professor at Temple University in Philadelphia.

He has made contributions to numerical and applied linear algebra as well as matrix theory.

[2][3] He was admitted without an undergraduate degree to the graduate school at New York University,[4] where he defended his PhD in 1983.

In 2020, he was elected president of the International Linear Algebra Society.

[5] He was editor-in-chief for the Electronic Transactions on Numerical Analysis from 2005 to 2013[6] and SIAM Journal on Matrix Analysis and Applications from 2015 to 2020[7] and is on the editorial boards of several journals, including the Electronic Journal of Linear Algebra (ELA),[8] the Electronic Transactions on Numerical Analysis (ETNA),[6] Linear Algebra and its Applications,[9] Mathematics of Computation,[10] Numerical Linear Algebra with Applications,[11] and Journal of Numerical Analysis and Approximation Theory.