Tim Duncan had the most games in the playoffs with 1+ block, with 215 games.

most nba playoff games with 1 blocks or more
Interpreted as:
most NBA playoff games by a player with 1 blocks or more
DuncanO'NealJamesOlajuwonHorryPippenEwingIbakaWallaceParishDurantMcHaleRobinsonWadeWallaceAbdul-JabbarGasolJordanGrantGarnettMaloneHowardBryantGreenDivac21517715713513312212011511111111011010910810510310210099979392929186
NAMEGPBLKMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLTOVPF+/-
Tim DuncanTim Duncan21556837.920.911.73.10.72.62.68.015.950.10.00.116.15.07.268.58,1494,4962,523668151561602+873
Shaquille O'NealShaquille O'Neal17745938.625.312.22.80.62.63.19.717.456.00.00.05.811.251.86,8414,4712,163501100544629+716
LeBron JamesLeBron James15725241.928.89.17.41.71.63.810.221.148.61.65.032.46.79.174.06,5714,5241,4361,158271603372+789
Hakeem OlajuwonHakeem Olajuwon13547239.826.211.23.21.73.52.910.519.852.90.00.120.05.27.272.05,3713,5311,509430225394522+2
Robert HorryRobert Horry13322529.58.55.82.61.21.71.22.96.743.91.23.237.61.52.071.23,9231,135775348164154408+614
Scottie PippenScottie Pippen12218539.518.07.85.02.01.53.06.514.644.80.93.030.24.05.572.54,8242,196955607243369411+134
Patrick EwingPatrick Ewing12030338.020.610.52.10.92.52.68.117.147.10.10.234.84.46.171.94,5602,4731,257256108307464+27
Serge IbakaSerge Ibaka11529228.510.96.70.70.42.50.94.48.950.00.61.638.31.51.879.23,2781,2557657843105353+216
Rasheed WallaceRasheed Wallace11122534.413.96.31.50.92.01.35.512.244.81.13.234.51.92.769.43,8131,543703170103148398+332
Robert ParishRobert Parish11121135.716.09.81.40.71.92.06.512.452.10.00.00.03.04.272.13,9661,7721,09315683217360-4
Kevin DurantKevin Durant11018240.730.28.14.11.11.73.210.221.347.82.36.436.07.58.786.94,4723,321892446118354277+656
Kevin McHaleKevin McHale11023036.920.88.11.80.42.12.37.813.657.00.00.135.75.26.480.64,0642,28689119446248364
David RobinsonDavid Robinson10931235.619.311.22.41.32.92.46.713.948.00.00.111.15.98.470.33,8782,1021,220262141267385+352
Dwyane WadeDwyane Wade10817538.823.15.65.31.61.63.38.417.946.70.62.032.75.77.378.44,1872,490600570168356283+307
Ben WallaceBen Wallace10525037.28.212.31.41.72.41.23.26.548.30.00.10.01.94.343.13,9098571,288148179123252+407
Kareem Abdul-JabbarKareem Abdul-Jabbar10324333.220.76.92.80.92.42.58.416.052.90.00.00.03.85.075.93,4242,13371328496255365
Pau GasolPau Gasol10223337.116.59.63.50.52.31.96.312.351.20.10.322.23.85.074.43,7891,67998335956190273+403
Michael JordanMichael Jordan10015842.234.96.85.92.31.63.312.825.550.30.72.331.88.510.283.04,2153,489678585225326318+179
Horace GrantHorace Grant9917337.311.69.02.21.11.71.14.68.952.00.00.114.32.33.272.43,6881,149890222110112303+26
Kevin GarnettKevin Garnett9718638.519.511.33.51.31.92.77.916.447.90.10.428.93.64.679.23,7311,8891,100344123258299+145
Karl MaloneKarl Malone9313541.725.711.33.01.21.52.89.420.546.10.00.215.86.89.274.03,8792,3871,047277113259319+45
Dwight HowardDwight Howard9224835.617.513.41.30.82.72.86.210.658.80.00.00.05.09.254.43,2761,6081,23112477261369+74
Kobe BryantKobe Bryant9214439.625.55.35.01.41.62.89.120.045.31.43.935.85.97.381.93,6432,342487457128257290+351
Draymond GreenDraymond Green9118036.612.89.76.41.82.02.64.610.045.71.13.730.22.53.571.63,3271,161881580160241339+846
Vlade DivacVlade Divac8616533.313.38.12.51.11.92.34.910.248.30.20.627.13.24.374.52,8681,14069321591197329+79
StatMuse has game-level data for blocks going back to the 1983 playoffs.