| Division: | II |
| Year: | 1984 |
| Gender: | Men's |
| Teams: | 32 |
| Finalfourcity: | Springfield, Massachusetts |
| Champions: | Central Missouri State Mules |
| Titlecount: | 1st |
| Runnerup: | St. Augustine's (NC) Falcon |
| Gamecount: | 1st |
| Semifinal1: | Kentucky Wesleyan Panthers |
| Finalfourcount: | 10th |
| Semifinal2: | North Alabama Lions |
| Finalfourcount2: | 4th |
| Coach: | Lynn Nance |
| Coachcount: | 1st |
| Mop: | Ron Nunnelly |
| Mopteam: | Central Missouri State |
| Attendance: | 67,392 |
The 1984 NCAA Division II men's basketball tournament involved 32 schools playing in a single-elimination tournament to determine the national champion of men's NCAA Division II college basketball as a culmination of the 1983-4 NCAA Division II men's basketball season. It was won by Central Missouri State (now known as the University of Central Missouri) and Central Missouri State's Ron Nunnally was the Most Outstanding Player.
San Francisco State's participation in the tournament was later vacated by the NCAA.
| School | Outcome | |
|---|---|---|
| C. W. Post | Runner-up | |
| Gannon | Fourth Place | |
| Mansfield | Third Place | |
| St. Augustine's | Regional Champion | |
| School | Outcome | |
|---|---|---|
| American International | Fourth Place | |
| Central Connecticut | Third Place | |
| Sacred Heart | Regional Champion | |
| South Dakota State | Runner-up | |
| School | Outcome | |
|---|---|---|
| Bellarmine | Third Place | |
| Cal State Bakersfield | Fourth Place | |
| Kentucky Wesleyan | Regional Champion | |
| Lewis | Runner-up | |
| School | Outcome | |
|---|---|---|
| Norfolk State | Runner-up | |
| Randolph–Macon | Third Place | |
| Virginia Union | Regional Champion | |
| Winston-Salem State | Fourth Place | |
| School | Outcome | |
|---|---|---|
| Morningside | Regional Champion | |
| Nebraska–Omaha | Third Place | |
| Northern Michigan | Fourth Place | |
| Wayne State (MI) | Runner-up | |
| School | Outcome | |
|---|---|---|
| Central Missouri State | Regional Champion | |
| Columbus State | Third Place | |
| Jacksonville State | Runner-up | |
| NW Missouri State | Fourth Place | |
| School | Outcome | |
|---|---|---|
| Chapman | Third Place | |
| Puget Sound | Runner-up | |
| San Francisco State | Regional Champion | |
| UC Riverside | Fourth Place | |
| School | Outcome | |
|---|---|---|
| Albany State | Fourth Place | |
| North Alabama | Regional Champion | |
| Tampa | Third Place | |
| West Georgia | Runner-up | |
*denotes tie
Location: Hammermill Center Host: Gannon University
Location: Kaiser Hall Host: Central Connecticut State University
Location: Owensboro Sportscenter Host: Kentucky Wesleyan College
Location: Norfolk Scope Host: Norfolk State University
Location: UNO Fieldhouse Host: University of Nebraska at Omaha
Location: CMSU Fieldhouse Host: Central Missouri State University
Location: Memorial Fieldhouse Host: University of Puget Sound
Location: Flowers Hall Host: University of North Alabama
*denotes each overtime played
Location: Springfield Civic Center Hosts: American International College and Springfield College
*denotes each overtime played