This is a list of the world's busiest seaports by cargo tonnage , the total mass of actual cargo transported through the port. The rankings are based on AAPA world port ranking data. The cargo rankings based on tonnage should be interpreted with caution since these measures are not directly comparable and cannot be converted to a single, standardized unit.

Rank	Port	Country	Measure	2010 [ 1 ] thousands of tons	2009 [ 2 ] thousands of tons	2008 [ 3 ] thousands of tons	2007 [ 4 ] thousands of tons	2006 [ 5 ] millions of tons	2005 [ 6 ] thousands of tons	2004 [ 7 ] thousands of tons
1	Shanghai	People's Republic of China	MT	534,371	505,715	508,000	561,446	537.0	443,000	378,962
2	Singapore	Singapore	FT	501,566	472,300	515,415	483,616	448.5	423,267	393,418
3	Rotterdam	Netherlands	MT	429,926	386,957	421,136	401,181	378.4	376,600	352,563
4	Guangzhou	People's Republic of China	MT	425,600	364,000	347,000	341,363	302.8	241,700	215,190
5	Ningbo	People's Republic of China	MT	408,180	371,540	361,850	471,630	309.7	272,400	225,850
6	Tianjin	People's Republic of China	MT	400,000	381,110	365,163	309,465	257.6	245,100	206,161
7	Qingdao	People's Republic of China	MT	350,120	274,304	278,271	265,020	224.2	184,300	161,650
8	Qinghuangdao	People's Republic of China	MT	276,815	243,850	252,000	245,964	204.9	167,500	150,320
9	Hong Kong	People's Republic of China	MT	267,815	242,967	259,402	245,433	238.2	230,139	220,879
10	Busan	South Korea	RT	262,963	226,182	241,683	243,564	217.9	217,200	219,760
11	South Louisiana	United States	MT	214,337	192,853	203,157	207,785	204.6	192,549	203,517
12	Houston	United States	MT	206,055	191,729	192,473	196,014	201.5	192,023	183,419
13	Shenzhen	People's Republic of China	MT	204,860	211,000	187,045	199,190	176.0	153,900	135,246
14	Dalian	People's Republic of China	MT	200,000	204,000	246,000	222,859	200.5	176,800	145,162
15	Port Hedland	Australia	MT	198,997	178,625	159,391	130,707	111.8	110,600	108,500
16	Nagoya	Japan	FT	185,703	165,101	218,130	215,602	208.0	187,100	182,289
17	Antwerp	Belgium	MT	178,167	157,807	189,390	182,897	167.4	160,100	152,300
18	Klang	Malaysia	FT	168,588	137,615	152,348	135,514	122.0	109,700	99,911
19	Dampier	Australia	MT	165,025	N/A	140,823	133,949	126.0	110,100	87,92
20	Chiba	Japan	MT	155,256	144,904	165,143	169,202	167.0	165,700	169,300

MT=Metric Tons; HT= Harbor Tons; FT=Freight Tons; RT = Revenue Tons

2005

Rank	Port	Country	Measure	Tons (000s) [ 6 ]	+/- from 2004	% change from 2004
1	Shanghai	People's Republic of China	MT	443,000	64,038	16.90
2	Singapore	Singapore	FT	423,267	29,849	7.59
3	Rotterdam	Netherlands	MT	376,600	24,037	6.82
4	Ningbo	People's Republic of China	MT	272,400	46,550	20.61
5	Tianjin	People's Republic of China	MT	245,100	38,939	18.89
6	Guangzhou	People's Republic of China	MT	241,700	26,510	12.32
7	Hong Kong	People's Republic of China	MT	230,139	9,260	4.19
8	Busan	South Korea	RT	217,200	-2,560	-1.16
9	South Louisiana	United States	MT	192,549	-10,968	-5.39
10	Houston	United States	MT	192,023	8,604	4.69
11	Nagoya	Japan	FT	187,100	4,811	2.64
12	Qingdao	People's Republic of China	MT	184,300	22,650	14.01
13	Gwangyang	South Korea	RT	177,500	11,625	7.01
14	Dalian	People's Republic of China	MT	176,800	31,638	21.79
15	Qinghuangdao	People's Republic of China	MT	167,500	17,180	11.43
16	Chiba	Japan	FT	165,700	-3,554	-2.10
17	Antwerp	Belgium	MT	160,100	7,773	5.10
18	Shenzhen	People's Republic of China	MT	153,900	18,654	13.79
19	New York/New Jersey	United States	MT	138,014	-314	-0.23
20	Kaohsiung	Taiwan ( Republic of China )	MT	137,900	-14,568	-9.55
21	Yokohama	Japan	FT	133,300	6,340	4.99
22	Hamburg	Germany	MT	125,700	11,216	9.80
23	Incheon	South Korea	RT	123,500	10,427	9.22
24	Port Hedland	Australia	MT	110,600	2,100	1.94
25	Dampier	Australia	MT	110,100	22,172	25.22
26	Klang	Malaysia	FT	109,700	9,789	9.80
27	Ulsan	South Korea	RT	103,500	-53,017	-33.87
28	Kitakyushu	Japan	FT	101,700	-1,545	-1.50
29	Marseilles	France	MT	96,600	2,507	2.66
30	Osaka	Japan	FT	93,100	-47	-0.05
31	Tubarão	Brazil	MT	92,700	8,267	9.79
32	Dubai	United Arab Emirates	MT	92,500	15,120	19.54
33	Tokyo	Japan	FT	92,000	573	0.63
34	Kobe	Japan	FT	91,200	5,539	6.47
35	Richards Bay	South Africa	HT	86,600	1,646	1.94
36	Itaqui	Brazil	MT	85,900	8,942	11.62
37	Newcastle	Australia	MT	85,600	2,040	2.44
38	Hay Point	Australia	MT	81,600	-3,959	-4.63
39	Vancouver	Canada	MT	76,500	2,926	3.98
40	Huntington	United States	MT	76,104	5,924	8.44
41	Le Havre	France	MT	75,000	-1,175	-1.54
42	Amsterdam	Netherlands	MT	74,900	1,724	2.36
43	Long Beach	United States	MT	72,447	-237	-0.33
44	Santos	Brazil	MT	71,900	4,291	6.35
45	Beaumont	United States	MT	71,566	-11,677	-14.03
46	Novorossiysk	Russia	MT	70,800
47	Corpus Christi, Texas	United States	MT	70,441	-1,207	-1.68
48	Gladstone	Australia	MT	67,200	4,052	6.42
49	Sepetiba	Brazil	MT	67,100
50	Algeciras	Spain	MT	63,500	2,206	3.60