  We present the first evidence on the $\delta$~Sct type pulsations of the
primary components of three eclipsing binaries IQ CMa, AW Men and W Vol in the
TESS field. A comprehensive investigation of the binary properties is
conducted. The light curves of the systems are analysed and the frequency
analyses are performed to residual data. The systems are compared to the
binaries of the same morphological types, and the primaries are examined in
contrast to the $\delta$~Sct type pulsators. The results show that the systems
are oscillating eclipsing Algol-type systems.

Solar and Stellar Astrophysics