Luka Doncic had the most triple-doubles in 2019-20, with 17 triple-doubles.

most triple doubles by player in 2020
2019-20Doncic2019-20James2019-20Jokic2019-20Westbrook2019-20Simmons2019-20Antetokounmpo2019-20Harden2019-20Sabonis2019-20Butler2019-20Ball2019-20Adebayo2019-20Green2019-20Lowry2019-20Rubio2019-20Young2019-20Morant2019-20Holiday2019-20Irving2019-20Leonard2019-20Lillard2019-20Valanciunas2019-20Wiggins2019-20Gordon2019-20Payton2019-20Napier1713138644433322222111111111
NAMESEASONTMGPTD3MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Luka DoncicLuka Doncic2019-20DALDAL611733.628.89.48.81.00.24.39.520.646.32.88.931.67.09.275.82,0471,7595735386214260153+253
LeBron JamesLeBron James2019-20LALLAL671334.625.37.810.21.20.53.99.619.449.32.26.334.83.95.769.32,3161,6985256847836261118+441
Nikola JokicNikola Jokic2019-20DENDEN731332.019.99.77.01.20.63.17.714.752.81.13.531.43.44.181.72,3361,4567115128544226222+255
Russell WestbrookRussell Westbrook2019-20HOUHOU57835.927.27.97.01.60.44.510.622.547.21.03.725.85.16.776.32,0491,5534514019320255200+124
Ben SimmonsBen Simmons2019-20PHIPHI57635.416.47.88.02.10.63.56.611.458.00.00.128.63.25.262.12,01793744445511933200186+62
Giannis AntetokounmpoGiannis Antetokounmpo2019-20MILMIL63430.429.513.65.61.01.03.710.919.755.31.44.730.46.310.063.31,9171,8578563546166230195+682
James HardenJames Harden2019-20HOUHOU68436.534.36.67.51.80.94.59.922.344.44.412.435.510.211.886.52,4832,33544651212560308227+285
Domantas SabonisDomantas Sabonis2019-20INDIND62434.818.512.45.00.80.52.77.413.754.00.31.125.43.54.872.32,1591,1477713104730170195+163
Jimmy ButlerJimmy Butler2019-20MIAMIA58333.819.96.76.01.80.62.25.913.145.50.52.124.47.69.183.41,9591,1573863501033212781+257
Lonzo BallLonzo Ball2019-20NOPNOP63332.111.86.17.01.40.63.14.410.940.32.36.337.50.71.256.62,0257453834388838193128-26
Bam AdebayoBam Adebayo2019-20MIAMIA72333.615.910.25.11.11.32.86.111.055.70.00.214.33.75.369.12,4171,1467353688293204182+244
Draymond GreenDraymond Green2019-20GSWGSW43228.48.06.26.21.40.82.32.97.338.90.83.027.91.51.975.91,222345266266593398110-192
Kyle LowryKyle Lowry2019-20TORTOR58236.219.45.07.51.40.43.15.813.841.62.88.035.25.15.985.72,0981,1262924338226178190+275
Ricky RubioRicky Rubio2019-20PHXPHX65231.013.04.78.81.40.22.74.410.641.51.23.336.13.03.586.32,0168473045709411173167+148
Trae YoungTrae Young2019-20ATLATL60235.329.64.39.31.10.14.89.120.843.73.49.536.18.09.386.02,1201,778255560658289104-228
Ja MorantJa Morant2019-20MEMMEM67231.017.83.97.30.90.33.36.714.047.70.92.733.53.64.677.62,0741,1932594885818220110-17
Jrue HolidayJrue Holiday2019-20NOPNOP61134.719.14.86.71.60.83.07.516.545.52.05.735.32.13.070.92,1171,1672934089948184145+35
Kyrie IrvingKyrie Irving2019-20BKNBKN20132.927.45.26.41.40.52.610.020.847.82.87.139.44.75.192.265854810312827105253-7
Kawhi LeonardKawhi Leonard2019-20LACLAC57132.427.17.14.91.80.62.69.319.947.02.25.737.86.27.188.61,8481,54340228010333149113+478
Damian LillardDamian Lillard2019-20PORPOR66137.530.04.38.01.10.32.99.520.446.34.110.240.17.07.888.82,4741,9782845307022194114+84
Jonas ValanciunasJonas Valanciunas2019-20MEMMEM70126.414.911.31.90.41.11.86.210.658.50.51.335.22.12.974.01,8451,0447881313076127185+5
Andrew WigginsAndrew Wiggins2019-20TOT54134.421.85.13.70.81.02.48.118.144.72.16.233.23.55.070.91,8591,1752741984553132127-201
Aaron GordonAaron Gordon2019-20ORLORL62132.514.47.73.70.80.61.65.412.443.71.23.830.82.43.667.42,0178944752285139100125-68
Elfrid PaytonElfrid Payton2019-20NYKNYK45127.710.04.77.21.60.42.14.39.843.90.31.520.31.11.957.01,24644921232370179689-84
Shabazz NapierShabazz Napier2019-20TOT56124.010.32.84.71.20.22.33.48.141.21.44.331.72.32.782.41,3445781582626911128101-96
StatMuse has season-level data for triple-doubles going back to the 1950-51 season.