Bill Russell has gotten the most career boards in the NBA Finals, with 1,718 boards.

most finals rebounds in the nba
Interpreted as:
most finals rebounds by a player in the NBA
RussellChamberlainBaylorJamesAbdul-JabbarHeinsohnDuncanPettitJohnsonO'NealBirdHavlicekJonesRodmanPippenUnseldWestSandersHaganParishGreenMcHaleSilasThurmondGrant1.7k862593561507473452416397393361350312294292282277277269260252230229225224
NAMESERIESGPREBMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSASTSTLBLKTOVPF+/-
Bill RussellBill RussellNBA Finals701,71845.516.424.55.913.045.64.67.561.33,1851,151225
Wilt ChamberlainWilt ChamberlainNBA Finals3586247.318.624.63.87.513.555.93.59.437.71,657652134101
Elgin BaylorElgin BaylorNBA Finals4459342.026.413.510.023.542.76.38.375.51,8501,161140
LeBron JamesLeBron JamesNBA Finals5556142.528.410.27.81.70.83.910.722.148.41.85.235.25.27.173.12,3371,5624309346217130-86
Kareem Abdul-JabbarKareem Abdul-JabbarNBA Finals5650737.223.59.13.20.92.22.79.718.652.30.00.00.04.15.870.02,0821,31718145116121196
Tom HeinsohnTom HeinsohnNBA Finals5247330.819.99.17.819.540.14.35.774.21,6021,035209
Tim DuncanTim DuncanNBA Finals3445239.620.813.32.80.82.42.87.916.248.50.00.10.05.17.171.61,3467089427819685+157
Bob PettitBob PettitNBA Finals2541641.528.416.69.623.041.89.112.075.41,03770977
Magic JohnsonMagic JohnsonNBA Finals5039740.919.47.911.72.00.33.86.813.151.60.20.823.75.76.587.42,04497158410216190147
Shaquille O'NealShaquille O'NealNBA Finals3039342.328.813.13.40.52.13.411.318.860.20.00.06.212.748.41,2688651031662101109+34
Larry BirdLarry BirdNBA Finals3136142.823.111.66.02.00.82.98.418.345.80.61.542.25.76.587.21,32671618763249180
John HavlicekJohn HavlicekNBA Finals4735039.821.77.44.11.20.28.319.742.15.16.084.81,8721,020195153154
Sam JonesSam JonesNBA Finals6431229.217.94.97.215.546.13.54.382.21,8711,143151
Dennis RodmanDennis RodmanNBA Finals3329427.84.98.91.30.80.41.31.83.848.00.00.214.31.22.256.391816342261442129+4
Scottie PippenScottie PippenNBA Finals3529242.019.08.35.91.91.13.37.016.542.50.93.325.64.15.474.71,4706642076739117118+38
Wes UnseldWes UnseldNBA Finals2028241.311.414.14.10.90.51.34.710.047.22.03.359.1825227821481568
Jerry WestJerry WestNBA Finals5527743.330.55.05.611.124.245.98.310.082.62,3801,679306159
Tom SandersTom SandersNBA Finals4327726.210.56.41.24.39.346.11.92.673.51,12645350179
Cliff HaganCliff HaganNBA Finals2526937.023.010.88.017.945.07.08.483.3926576109
Robert ParishRobert ParishNBA Finals3126032.915.48.41.31.01.72.16.313.148.30.00.00.02.74.463.01,02047740325465108
Draymond GreenDraymond GreenNBA Finals2725238.912.79.36.71.81.02.74.410.342.61.24.030.32.83.676.51,051344182492872113+120
Kevin McHaleKevin McHaleNBA Finals3123032.517.97.41.40.31.42.36.812.554.40.00.10.04.45.776.81,0095564310447095
Paul SilasPaul SilasNBA Finals2522933.57.29.22.40.80.21.52.56.042.32.22.877.1837180612051878
Nate ThurmondNate ThurmondNBA Finals1122544.012.820.52.44.513.233.83.95.867.24841412635
Horace GrantHorace GrantNBA Finals2622436.510.68.62.11.01.31.04.58.752.20.00.00.01.52.363.99492755526352775+14
StatMuse has game-level data for rebounds going back to the 1956 Finals.