May 2020 produced 19 #1s across six music shows, shared by 8 artists and 8 songs.
The most wins went to Oh My Girl (6), followed by NU'EST (4) and NCT 127 (3).
The most-awarded song was “Nonstop” by Oh My Girl with 6 wins on 6 shows, then “I'm in Trouble” with 4.
Songs that swept five or more shows: “Nonstop”.
No artist earned a first-ever win.
Counts are recomputed every morning from each show's published results (Wikipedia lists, CC BY-SA). Weeks without a broadcast or record are shown in grey; dates open episode pages.
| Date | Show | Song · Artist |
|---|---|---|
| 2020-05-01 | Music Bank | Not By The MoonGot7 |
| 2020-05-05 | The Show | NonstopOh My Girl |
| 2020-05-06 | Show Champion | NonstopOh My Girl |
| 2020-05-07 | M Countdown | NonstopOh My Girl |
| 2020-05-08 | Music Bank | Ridin'NCT Dream |
| 2020-05-09 | Show! Music Core | NonstopOh My Girl |
| 2020-05-10 | Inkigayo | NonstopOh My Girl |
| 2020-05-13 | Show Champion | KnockAstro |
| 2020-05-15 | Music Bank | NonstopOh My Girl |
| 2020-05-17 | Inkigayo | EightIU |
| 2020-05-20 | Show Champion | I'm in TroubleNU'EST |
| 2020-05-21 | M Countdown | I'm in TroubleNU'EST |
| 2020-05-22 | Music Bank | I'm in TroubleNU'EST |
| 2020-05-23 | Show! Music Core | I'm in TroubleNU'EST |
| 2020-05-26 | The Show | Can't You See Me?Tomorrow X Together |
| 2020-05-27 | Show Champion | Can't You See Me?Tomorrow X Together |
| 2020-05-28 | M Countdown | PunchNCT 127 |
| 2020-05-29 | Music Bank | PunchNCT 127 |
| 2020-05-30 | Show! Music Core | PunchNCT 127 |