The Billboard Mainstream Rock chart is compiled from the number of airplay songs received from active rock and heritage rock radio stations in the United States.[1] Below are the songs that have reached number one on the chart during the 2020s, listed in chronological order.
| Issue date | Song | Artist(s) | Weeks at number one | Ref. | |
|---|---|---|---|---|---|
| 2020 | |||||
| January 4 | "Under the Graveyard" | Ozzy Osbourne | 3 | [2] | |
| January 25 | "Killing Me Slowly" | Bad Wolves | 1 | [3] | |
| February 1 | "Attention Attention" | Shinedown | 1 | [4] | |
| February 8 | "Inside Out" | Five Finger Death Punch | 2 | [5] | |
| February 22 | "History of Violence" | Theory of a Deadman | 1 | [6] | |
| February 29 | "Inside Out" | Five Finger Death Punch | 2 | ||
| March 14 | "Die to Live" | Volbeat featuring Neil Fallon | 1 | [7] | |
| March 21 | "Hurricane" | I Prevail | 2 | [8] | |
| April 4 | "Oh Yeah!" | Green Day | 2 | [9] | |
| April 18 | "Far Away" | Breaking Benjamin featuring Scooter Ward | 3 | [10] | |
| May 9 | "Popular Monster" | Falling in Reverse | 1 | [11] | |
| May 16 | "Unforgettable" | Godsmack | 5 | [12] | |
| June 20 | "Sober" | Bad Wolves | 2 | [13] | |
| July 4 | "A Little Bit Off"[14] | Five Finger Death Punch | 4 | [15] | |
| August 1 | "Death by Rock and Roll" | The Pretty Reckless | 3 | [16] | |
| August 22 | "Atlas Falls" | Shinedown | 2 | [17] | |
| September 5 | "All Within My Hands" | Metallica and San Francisco Symphony | 4 | [18] | |
| October 3 | "Patience" | Chris Cornell | 1 | [19] | |
| October 10 | "Dangerous" | Seether | 3 | [20] | |
| October 31 | "Black Eyes Blue" | Corey Taylor | 2 | [21] | |
| November 14 | "Shot in the Dark" | AC/DC | 5 | [22] | |
| December 19 | "Shame Shame" | Foo Fighters | 6 | [23] | |
| 2021[24] [25] | |||||
| January 30 | "My Way, Soon" | Greta Van Fleet | 1 | [26] | |
| February 6 | "Living the Dream" | Five Finger Death Punch | 1 | [27] | |
| February 13 | "Trouble's Coming" | Royal Blood | 2 | [28] | |
| February 27 | "Distance" | Mammoth WVH | 2 | [29] | |
| March 13 | "The Ending" | Papa Roach | 1 | [30] | |
| March 20 | "Self Destructor" | Chevelle | 3 | [31] | |
| April 10 | "Waiting on a War" | Foo Fighters | 2 | [32] | |
| April 24 | "And So It Went" | 2 | [33] | ||
| May 8 | "Breathe Again" | 1 | [34] | ||
| May 15 | "Bruised and Bloodied" | 1 | [35] | ||
| May 22 | "Let the Bad Times Roll" | 1 | [36] | ||
| May 29 | "Bruised and Bloodied" | Seether | 1 | ||
| June 5 | "Mercy" | 4 | [37] | ||
| July 3 | "Darkness Settles In" | Five Finger Death Punch | 5 | [38] | |
| August 7 | "Nowhere Generation" | Rise Against | 1 | [39] | |
| August 14 | "For the Glory" | All Good Things featuring Johnny 3 Tears & Charlie Scene | 1 | [40] | |
| August 21 | "Wait a Minute My Girl" | Volbeat | 3 | [41] | |
| September 11 | "Don't Back Down" | Mammoth WVH | 1 | [42] | |
| September 18 | "Making a Fire" | Foo Fighters | 1 | [43] | |
| September 25 | "Only Love Can Save Me Now" | 3 | [44] | ||
| October 16 | "Survivor" | Pop Evil | 2 | [45] | |
| October 30 | "Wasteland" | Seether | 1 | [46] | |
| November 6 | "Back from the Dead" | Halestorm | 1 | [47] | |
| November 13 | "Alone Again" | Asking Alexandria | 1 | [48] | |
| November 20 | "Kill the Noise" | Papa Roach | 4 | [49] | |
| December 18 | "Shotgun Blues" | Volbeat | 2 | [50] | |
| 2022 | |||||
| January 1 | "Hunter's Moon" | Ghost | 1 | [51] | |
| January 8 | "Shotgun Blues" | Volbeat | 1 | ||
| January 15 | "Dead Inside" | Nita Strauss and David Draiman | 3 | [52] | |
| February 5 | "So Called Life"[53] | Three Days Grace | 4 | [54] | |
| March 5 | "Planet Zero" | Shinedown | 8 | [55] | |
| April 30 | "Zombified" | Falling in Reverse | 1 | [56] | |
| May 7 | "Won't Stand Down" | Muse | 1 | [57] | |
| May 14 | "Dead Man Walking" | Jelly Roll | 1 | [58] | |
| May 21 | "Call Me Little Sunshine" | Ghost | 2 | [59] | |
| June 4 | "The Steeple" | Halestorm | 1 | [60] | |
| June 11 | "Afterlife" | Five Finger Death Punch | 4 | [61] | |
| July 9 | "Lifetime" | Three Days Grace | 3 | [62] | |
| July 30 | "Patient Number 9" | Ozzy Osbourne featuring Jeff Beck | 3 | [63] | |
| August 20 | "Daylight" | Shinedown | 2 | [64] | |
| September 3 | "Hey You" | Disturbed | 3 | [65] | |
| September 24 | "No Apologies" | Papa Roach | 1 | [66] | |
| October 1 | "Times Like These" | Five Finger Death Punch | 3 | [67] | |
| October 22 | "Masterpiece" | Motionless in White | 1 | [68] | |
| October 29 | "Natural Born Killer" | Highly Suspect | 1 | [69] | |
| November 5 | "Bad Things" | I Prevail | 1 | [70] | |
| November 12 | "Surrender" | Godsmack | 5 | [71] | |
| December 17 | "Lux Æterna" | Metallica | 11 | [72] | |
| 2023 | |||||
| March 4 | "Welcome to the Circus" | Five Finger Death Punch | 1 | [73] | |
| March 11 | "Just Pretend" | Bad Omens | 1 | [74] | |
| March 18 | "Lost"[75] | Linkin Park | 8 | [76] | |
| May 13 | "Cut the Line" | Papa Roach | 1 | [77] | |
| May 20 | "Rescued" | Foo Fighters | 6 | [78] | |
| July 1 | "72 Seasons" | Metallica | 2 | [79] | |
| July 15 | "Need a Favor" | Jelly Roll | 3 | [80] | |
| August 5 | "Lowest in Me" | Staind | 2 | [81] | |
| August 19 | "Unstoppable" | Disturbed | 2 | [82] | |
| September 2 | "The Dirt I'm Buried In" | Avatar | 2 | [83] | |
| September 16 | "Blood in the Water" | Ayron Jones | 1 | [84] | |
| September 23 | "Beyond" | Corey Taylor | 1 | [85] | |
| September 30 | "Under You" | Foo Fighters | 1 | [86] | |
| October 7 | "Psycho" | Asking Alexandria | 4 | [87] | |
| November 4 | "Too Far Gone?" | Metallica | 1 | [88] | |
| November 11 | "Skeletons" | Pop Evil | 1 | [89] | |
| November 18 | "Might Love Myself" | Beartooth | 1 | [90] | |
| November 25 | "The American Dream Is Killing Me" | Green Day | 8 | [91] | |
| 2024 | |||||
| January 20 | "A Symptom of Being Human" | Shinedown | 4 | [92] | |
| February 17 | "Artificial" | Daughtry | 1 | [93] | |
| February 24 | "Leave a Light On (Talk Away the Dark)" | Papa Roach | 3 | [94] | |
| March 16 | "Dark Matter" | Pearl Jam | 4 | [95] | |
| April 13 | "The Glass" | Foo Fighters | 1 | [96] | |
| April 20 | "Friendly Fire" | Linkin Park | 1 | [97] | |
| April 27 | "Dilemma" | Green Day | 2 | [98] | |
| May 11 | "I Was Alive" | Beartooth | 1 | [99] | |
| May 18 | "Screaming Suicide" | Metallica | 2 | [100] | |
| June 1 | "Truth" | Godsmack | 2 | [101] | |
| June 15 | "This Is the Way" | Five Finger Death Punch featuring DMX | 2 | [102] | |
| June 29 | "If It Doesn't Hurt" | Nothing More | 2 | [103] | |
| July 13 | "Wreckage" | Pearl Jam | 1 | [104] | |
| July 20 | "All My Life" | Falling In Reverse featuring Jelly Roll | 5 | [105] | |
| August 24 | "Magnetic" | Wage War | 1 | [106] | |