  A peculiar subtype of Type Ia supernovae (SNe), 03fg-like
(super-Chandrasekhar) SNe, show different observational properties from
prototypical Type Ia SNe, typically having high luminosity at the light-curve
peak, low expansion velocities, and strong carbon features. The origin of this
class of Type Ia SNe has been actively debated. Recent nebular-phase infrared
observations of the 03fg-like Type Ia SN 2022pul using the James Webb Space
Telescope revealed large-scale asymmetries in the ejecta and the presence of
the strong [Ne II] line at 12.81 $\mu$m, suggesting a violent merger of two
white dwarfs as its origin. Polarimetry is another powerful tool to study
overall ejecta asymmetries of spatially-unresolved SNe. Here, we aim to check
the universality of the violent merger scenario as the origin of the 03fg-like
Type Ia SNe, by studying their explosion geometries using polarimetry. In this
letter, we present imaging-polarimetric observations of the two 03fg-like Type
Ia SNe 2021zny and 2022ilv. SNe 2021zny and 2022ilv show high intrinsic
polarization ($\sim1$ % -$\sim2$ %), which might be composed of multiple
components with different polarization angles. This indicates that they have
complex aspherical structures in their ejecta, supporting the violent merger
scenario for their origin. Our observations provide the first clear evidence
from polarimetry for such aspherical structures.
