"[9] Canadian journalist Martin Popoff praised the album for being "one of the most polished and savvy of the NWOBHM", evoking the sound of "acts like Thin Lizzy, UFO, even Queen and Mott the Hoople."

[10] Rolling Stone's David Fricke reviewed the album favorably on the same wavelength, explaining that it "shows they not only respect their elders, they've taken cues from their New Wave peers, too."

He also stated that "guitarists Pete Willis and Steve Clark shoot from the hip, packing their licks into tight, three-minute pop arrangements", and that lead singer Joe Elliott "wails wonderfully in a resonating tenor, fortified by backup harmonies and Tom Allom's battering-ram production."

"[13] Sputnikmusic staff review noted that the "middle-class common-man image" of the "New Wave of British Heavy Metal" movement "partially played a part in making Def Leppard one of [its] leaders".

He also stated that the band's ambition "would never allow [them] to be tunnel-visioned", but he concluded that On Through the Night "can be categorized as a grower of an album since the more superficial elements that would appeal to the mainstream will initially distract some listeners from what is actually an incredibly tight musical and vocal performance.