Since 1989-90, the Washington Bullets have the worst three-point percentage by a team in a season, at 18.8 percent in 1989-90.

worst team 3-point shooting percentage season since 1990

TEAM	3P%	SEASON	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF
Washington Bullets	18.8	1989-90	82	241.8	107.7	44.5	27.0	6.8	5.2	14.6	43.9	92.5	47.5	0.5	2.4	19.5	25.5	76.4	19,830	8,832	3,648	2,214	561	424	1,201	1,929
Washington Bullets	19.4	1990-91	82	242.1	101.4	43.5	25.4	7.2	5.7	16.6	41.3	88.6	46.6	0.7	3.5	18.0	24.7	72.9	19,855	8,313	3,563	2,081	588	468	1,359	1,927
San Antonio Spurs	23.9	1989-90	82	240.6	106.3	44.4	24.8	9.7	6.8	17.1	41.3	85.3	48.4	0.7	2.8	23.0	30.9	74.5	19,730	8,718	3,637	2,037	799	554	1,399	1,854
Los Angeles Clippers	24.3	1989-90	82	241.5	103.8	41.7	24.1	9.5	6.2	18.9	40.5	83.6	48.4	0.7	2.8	22.1	30.0	73.8	19,805	8,509	3,418	1,978	782	507	1,547	1,859
Minnesota Timberwolves	24.8	1989-90	82	242.1	95.2	39.6	22.5	9.6	4.2	14.6	37.4	83.9	44.6	0.9	3.6	19.5	26.1	74.7	19,855	7,803	3,249	1,844	789	344	1,197	1,901
Los Angeles Clippers	26.0	1990-91	82	241.5	103.5	45.7	25.8	8.8	6.2	17.5	41.4	89.2	46.4	1.4	5.3	19.5	27.7	70.2	19,805	8,491	3,746	2,119	725	507	1,438	2,043
Boston Celtics	26.2	1989-90	82	240.3	110.0	46.0	29.5	6.6	5.5	15.3	43.5	87.2	49.8	1.3	4.9	21.8	26.3	83.2	19,705	9,023	3,773	2,423	539	455	1,256	1,717
Philadelphia 76ers	26.4	1998-99	50	243.0	89.7	43.1	18.7	10.8	5.4	16.4	33.1	77.7	42.6	2.0	7.4	21.5	29.7	72.2	12,150	4,483	2,157	934	542	271	822	1,152
Los Angeles Lakers	26.7	1991-92	82	241.8	100.4	40.9	22.0	9.2	4.9	13.3	38.8	85.1	45.6	1.5	5.4	21.3	27.8	76.6	19,830	8,229	3,352	1,803	756	400	1,089	1,543
Los Angeles Clippers	27.1	1992-93	82	241.5	107.1	43.2	27.3	10.3	6.0	16.3	43.2	89.4	48.4	1.6	6.0	19.0	26.5	71.8	19,805	8,783	3,543	2,242	847	491	1,338	1,920
Golden State Warriors	27.2	1997-98	82	241.8	88.3	45.9	20.8	7.6	5.5	16.7	34.7	83.9	41.3	2.3	8.5	16.6	23.3	71.0	19,830	7,237	3,761	1,708	621	448	1,369	1,859
Washington Bullets	27.2	1991-92	82	242.1	102.4	41.6	24.5	8.7	5.1	15.3	41.0	89.0	46.1	1.8	6.5	18.5	23.9	77.8	19,855	8,395	3,414	2,011	713	422	1,254	1,852
San Antonio Spurs	27.3	1990-91	82	241.8	107.1	46.2	26.1	8.2	7.0	17.6	41.6	85.2	48.8	1.0	3.6	23.0	30.0	76.6	19,830	8,782	3,788	2,140	670	571	1,445	1,896
New Jersey Nets	27.5	1990-91	82	241.8	102.9	45.7	21.7	9.1	7.3	17.4	40.4	91.0	44.4	2.0	7.1	20.2	27.4	73.9	19,830	8,441	3,748	1,782	748	600	1,423	1,954
New Jersey Nets	27.7	1989-90	82	240.3	100.1	45.0	18.0	9.4	5.9	16.6	38.5	90.4	42.6	1.7	6.2	21.4	28.7	74.6	19,705	8,208	3,687	1,475	774	481	1,360	1,952
Denver Nuggets	27.8	2002-03	82	240.6	84.2	42.4	21.2	8.7	5.1	18.5	32.8	79.8	41.1	2.8	10.0	15.8	22.6	69.9	19,730	6,901	3,475	1,737	712	422	1,514	2,056
Denver Nuggets	28.3	1990-91	82	240.6	119.9	49.4	24.5	10.4	5.0	16.2	47.6	108.1	44.0	3.7	12.9	21.0	27.6	76.3	19,730	9,828	4,050	2,005	856	406	1,332	2,235
Minnesota Timberwolves	28.3	1990-91	82	242.7	99.6	41.3	23.0	8.7	5.4	13.0	39.8	88.7	44.9	1.3	4.6	18.7	25.4	73.5	19,905	8,169	3,388	1,885	712	440	1,062	1,864
Denver Nuggets	28.5	1993-94	82	240.9	100.3	44.7	21.5	8.3	8.4	17.3	38.5	82.7	46.5	2.1	7.3	21.2	29.5	71.8	19,755	8,221	3,662	1,763	679	686	1,422	1,926
Golden State Warriors	28.7	1998-99	50	242.5	88.3	47.5	20.7	8.3	4.4	15.4	34.6	83.5	41.5	3.2	11.3	15.9	23.5	67.6	12,125	4,416	2,375	1,037	414	221	768	1,270
Boston Celtics	28.7	1992-93	82	241.2	103.7	42.8	24.4	7.9	5.6	14.3	42.1	86.5	48.7	1.3	4.7	18.1	23.3	77.7	19,780	8,502	3,512	1,999	647	458	1,174	1,862
Los Angeles Clippers	28.9	1991-92	82	241.8	102.9	43.0	25.0	10.0	6.1	15.5	40.8	86.3	47.3	1.8	6.1	19.5	27.1	72.0	19,830	8,440	3,525	2,053	824	498	1,269	1,873
Chicago Bulls	28.9	1998-99	50	241.5	81.9	39.3	20.3	8.7	3.4	15.5	30.8	76.7	40.1	3.5	12.2	16.8	23.7	70.9	12,075	4,095	1,967	1,017	436	169	774	1,112
Boston Celtics	28.9	1993-94	82	242.7	100.8	41.7	23.5	8.2	5.4	15.1	40.6	86.1	47.2	1.7	5.8	17.8	24.4	73.0	19,905	8,267	3,417	1,928	674	440	1,242	1,849
Minnesota Timberwolves	29.2	1992-93	82	242.1	98.1	38.3	24.4	7.9	5.5	17.3	37.1	79.6	46.6	2.0	6.9	21.9	27.4	79.8	19,855	8,046	3,144	2,001	649	455	1,422	2,028