Phi Upsilon Omicron (ΦΥΟ), sometimes called Phi U, is a scholastic honor society that recognizes academic achievement among students in the field of family and consumer science. It was established in 1909 at the University of Minnesota.

Phi Upsilon Omicron was founded at the University of Minnesota on February 10, 1909, as an honor society for students of home economics, now called family and consumer sciences. It was admitted to the Association of College Honor Societies in 1979. It is a former member of the Professional Fraternity Association.

The society has an Educational Foundation that presents 28 undergraduate scholarships and eight graduate fellowships, awarded annually to its members. The foundation also has seven undergraduate awards and two advisor awards.

In 2011, Phi Upsilon Omicron has sixty active college chapters, 31 alumni chapters, and a total membership of approximately 93,065.

The Greek letters Phi Upsilon Omicron represent the first, second, and last words of the Greek phrase that translates as “The Light of the Home.”

The society crest includes a shield with a castle that symbolizes home, a pelican that presents family, and a horn of plants that symbolizes nutrition. Above is a scroll with the Greek letters ΦΥΟ.

Phi Upsilon Omicron's badge features a candle which represents light. Its colors are cream, gold, and purple. Cream symbolized honor and integrity, gold represents light, and violet represents the society's flower. Its flower is the violet.

Its semiannual journal is The Candle. It was first published in November 1915.