Marriages and Infidelities is a collection of 25 works of short fiction by Joyce Carol Oates published by Vanguard Press in 1972.

[3][4] Literary critic William Abrahams, in Saturday Review, regards the collection as evidence placing Oates "among the most remarkable writers of her generation" and "a master" of the short story form.

"[5] Critic Michael Wood in The New York Times finds the stories in the collection "full of melodrama and yet curiously dull," evidence of a writer "racking her brains for action, wanting to write even in the absence of anything to write about."

Wood reports that there are several good stories in the volume - with special mention for "Problems of Adjustment in Survivors of Natural/Unnatural Disasters" - and offers this caveat: But the successes make the failures seem self-indulgent…Oates is groping, then, for themes and forms in far too much of this book.

[7] Joyce Carol Oates's fourth collection of short stories is remarkable because of two aspects.