The N,N′‐bidentate [(
N
,
N
′)
PdCl2
] complexes [i.e., [
L
n
PdCl2
] (L
n
= L1–L5
)] were synthesized by the reaction of [Pd(
CH3CN
)
2Cl2
] with N‐methyl‐N‐(pyridin‐2‐ylmethyl)aniline (
L1
) and its derivatives (
L2–L5
) in ethanol. The molecular structures of [
L
n
PdCl2
] (L
n
= L1–L3
) were characterized using X‐ray crystallography, which showed that the Pd atom in the Pd(II) complexes had a square planar geometry involving two nitrogen atoms of N,N′‐bidentate and two chlorido ligands. The complexes [
L
n
PdCl2
] (L
n
= L1–L5
) were investigated for methyl methacrylate (MMA) polymerization in the presence of modified methylaluminoxane (MMAO) at 60 °C. Specifically, complex [
L1PdCl2
] showed moderate catalytic activity toward MMA polymerization with an activity of 3.03 × 104 g poly(methylmethacrylate) (PMMA)/mol Pd·h and PMMA syndiotacticity (characterized by
1H NMR spectroscopy) of ~0.68.