Mary and Willie

{{Infobox song

| name = Mary and Willie

| cover =

| alt =

| type = single

| artist = K. T. Oslin

| album = Love in a Small Town

| B-side = Love Is Strange

| released = February 16, 1991

| format =

| recorded =

| studio =

| venue =

| genre = Country

| length = 3:32

| label = RCA

| writer = K. T. Oslin

| producer = Barry Beckett

| prev_title = Come Next Monday

| prev_year = 1990

| next_title = You Call Everybody Darling

| next_year = 1991

}}

"Mary and Willie" (sometimes spelled "Mary and Willi") is a song written and recorded by American country music artist K. T. Oslin. It was released in February 1991 as the third single from the album Love in a Small Town. The song reached #28 on the Billboard Hot Country Singles & Tracks chart.{{cite book |title= The Billboard Book Of Top 40 Country Hits: 1944-2006, Second edition|last=Whitburn |first=Joel |author-link=Joel Whitburn |year=2004 |publisher=Record Research |page=255}}