The Last One to Know (song)

{{Infobox song

| name = The Last One to Know

| cover =

| alt =

| type = single

| artist = Reba McEntire

| album = The Last One to Know

| B-side = I Don't Want to Be Alone

| released = August 24, 1987

| format =

| recorded =

| studio =

| venue =

| genre = Country

| length = 3:10

| label = MCA

| writer = Matraca Berg
Jane Mariash

| producer = Jimmy Bowen
Reba McEntire

| prev_title = One Promise Too Late

| prev_year = 1987

| next_title = Love Will Find Its Way to You

| next_year = 1988

}}

"The Last One to Know" is a song written by Matraca Berg and Jane Mariash, and originally recorded by Karen Brooks on her 1985 album I Will Dance with You. The song was released by American country music artist Reba McEntire in September 1987 as the first single and title track from her album The Last One to Know. It was McEntire's ninth number one country hit as a solo artist. The single went to number one for one week and spent a total of fourteen weeks on the country chart.{{cite book |title= The Billboard Book Of Top 40 Country Hits: 1944-2006, Second edition|last=Whitburn |first=Joel |authorlink=Joel Whitburn |year=2004 |publisher=Record Research |page=226}}