Lev R. Ginzburg (Russian: Лев Рувимович Гинзбург; born 1945) is a mathematical ecologist and the president of the firm Applied Biomathematics.

[1] In 1982, Ginzburg founded and has since run Applied Biomathematics, a research and software firm focused on conservation biology, ecology, health, engineering and education.

[4] Applied Biomathematics translates theoretical concepts from biology and the physical sciences into new mathematical and statistical methods to quantitatively solve practical problems in these areas using risk analysis and reliability assessments.

The methods and RAMASsoftware products developed by Applied Biomathematics are used by hundreds of academic institutions around the world, government agencies, and industrial and private labs in over 60 countries.

His concept of inertial growth or an explanation of population cycles, based upon maternal effect model, is the main point of his book written with Mark Colyvan, Ecological Orbits,[10] and a more recent paper co-authored with Charley Krebs.