Izabella Łaba (born 1966)[1] is a Polish-Canadian mathematician, a professor of mathematics at the University of British Columbia.

Her main research specialties are harmonic analysis, geometric measure theory, and additive combinatorics.

[4] Łaba's thesis research proved the asymptotic completeness of many n-body systems in the presence of a constant magnetic field.

[2][5] While at UCLA, with Nets Katz and Terence Tao, she made important contributions to the theory of Kakeya sets, including the best known lower bound on these sets in three-dimensional Euclidean spaces.

[2][5] Her more recent work concerns harmonic analysis, periodic tilings, and Falconer's conjecture on sets of distances of points.