1978 Virginia Slims of Seattle

{{Use mdy dates|date=January 2025}}

{{TennisEventInfo|1978|Virginia Slims of Seattle|

| date=February 6–12

| edition=2nd

| category=Virginia Slims circuit

| prize_money=$100,000

| draw=32S / 16D

| surface=Carpet (Sporteze) / indoor

| location=Seattle, Washington, U.S.

| venue=Seattle Center Arena

| attendance=

| champs={{flagicon|USA}} Martina Navratilova

| champd={{flagicon|AUS}} Kerry Melville Reid / {{flagicon|AUS}} Wendy Turnbull

| main_name=WTA Seattle

| after_name=Avon Championships of Seattle

}}

The 1978 Virginia Slims of Seattle was a women's tennis tournament played on indoor carpet courts at the Seattle Center Arena in Seattle, Washington in the United States that was part of the 1978 Virginia Slims World Championship Series. It was the second edition of the tournament and was held from February 6 through February 12, 1978.{{cite book|title=Women's Tennis 1968–84: the Ultimate Guide|year=2011|publisher=Remous|pages=292, 296–297|author=John Dolan}} First-seeded Martina Navratilova won the singles title and earned $20,000 first-prize money.{{cite book|title=World of Tennis 1979 : a BP yearbook|year=1979|publisher=Macdonald and Jane's|location=London|isbn=978-0354090681|page=184|editor=John Barrett|editor-link=John Barrett (tennis)}}