Why is it der Sponsor?

Sponsor ends in -or, and almost all nouns ending in -or are masculine: in a German dictionary, 93% of them take der.

All nouns ending in -or
Sense 1
der

Meaning

[1] Financial supporter of a person, a group or a company someone who operates sponsorship

[1] finanzieller Unterstützer einer Person, einer Gruppe oder eines Unternehmens; jemand, der Sponsoring betreibt

Examples

[1] Without such a spacious sponsor, the expedition could never have taken place

[1] Ohne so einen großzügigen Sponsor hätte die Expedition nie stattfinden können.

[1] "Therefore, our very best thanks go to all representatives of our sponsors"

[1] „Daher gebührt allen Vertretern unserer Sponsoren unser allerherzlichster Dank.“
More source examples (1)

These dictionary examples can include historical and less common uses.

[1] "Carnival is a million business, and sponsors want it more funny than evil"

[1] „Karneval ist ein Millionengeschäft, und Sponsoren wollen es eher lustig als böse.“

Declension

1 Singular Plural
Nominativ der Sponsor die Sponsoren
Genitiv des Sponsors der Sponsoren
Dativ dem Sponsor den Sponsoren
Akkusativ den Sponsor die Sponsoren

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary