| Kaede | PF-293 | 1943 | ex-USS Tacoma class |
| Kaido | LSSL-420 | 1945? | ex-US LSSL type |
| Kamishima | MSC-664 | 1986 | Hatsushima class |
| Kamishima | MCL-725 | 1986 | Hatsushima class |
| Kamome | PC-305 | 1956 | Kamome class |
| Kamoshima | MS-25/MSI-684 | 1945 | ex-IJN Pa-1 class |
| Kamozuru | MS-06/MSI-691 | 1944 | ex-IJN CHa-1 class |
| Kanawa | MSC-606 | 1959 | Kasado class |
| Kanna | LSSL-441 | 1945? | ex-US LSSL type |
| Karato | MSC-617 | 1962 | Kasado class |
| Kari | PC-301 | 1956 | Kari class |
| Karukaya | LSSL-446 | 1945? | ex-US LSSL type |
| Kasado | MSC-604 | 1958 | Kasado class |
| Kasasagi | PC-314 | 1960 | Mizutori class |
| Kashi | PF-283 | 1943 | ex-USS Tacoma class |
| Kashima | TV-3508 | 1994 | Kashima |
| Katori | TV-3501 | 1968 | Katori |
| Katsura | MSC-629 | 1967 | Kasado class |
| Kaya | PF-288 | 1943 | ex-USS Tacoma class |
| Keito | LSSL-448 | 1945? | ex-US LSSL type |
| Kenryu | SS-504 | 2010 | Soryu class |
| Keshi | LSSL-409 | 1945? | ex-US LSSL type |
| Keyaki | PF-295 | 1943 | ex-USS Tacoma class |
| Kiji | MS-81 | 1943 | ex-IJN CHa-1 class |
| Kiji | PC-302 | 1956 | Kari class |
| Kiku | LSSL-402 | 1945? | ex-US LSSL type |
| Kikuzuki | DD-165 | 1967 | Takatsuki class |
| Kikyo | LSSL-447 | 1945? | ex-US LSSL type |
| Kiri | PF-291 | 1943 | ex-USS Tacoma class |
| Kirisame | DD-104 | 1997 | Murasame class (II) |
| Kirishima | DD-174 | 1993 | Kongo class |
| Kitakami | DE-213 | 1963 | Isuzu class |
| Kongo | DD-173 | 1991 | Kongo class |
| Koshiki | MSC-615 | 1961 | Kasado class |
| Kozu | MSC-609 | 1959 | Kasado class |
| Kozu | MST-473 | 1959 | Kasado class |
| Kudako | MSC-622 | 1964 | Kasado class |
| Kumano | DE-224 | 1975 | Chikugo class |
| Kumataka | PC-318 | 1963 | Umitaka class |
| Kumataka | PG-827 | 2002 | Hayabusa class |
| Kumejima | MSC-676 | 1993 | Uwajima class |
| Kunisaki | LST-4003 | 2001 | Osumi class |
| Kurama | DD-144 | 1979 | Shirane class |
| Kurihama | ASE-6101 | 1979 | Kurihama |
| Kurobe | ATS-4202 | 1988 | Kurobe |
| Kuroshima | MSC-692 | 2005 | Sugashima class |
| Kuroshio | SS-501 | 1942 | ex-USS Gato class |
| Kuroshio | SS-570 | 1974 | Uzushio class |
| Kuroshio | SS-596 | 2002 | Oyashio class |
| Kurushima | MS-24/MSI-687 | 1945 | ex-IJN Pa-1 class |
| Kusu | PF-281 | 1943 | ex-USS Tacoma class |
| Kyosei Maru | MS-80 | Auxiliary sweepers |
| Maejima | MSC-675 | 1993 | Uwajima class |
| Maki | PF-298 | 1943 | ex-USS Tacoma class |
| Makigumo | DD-114 | 1965 | Yamagumo class |
| Makinami | DD-112 | 1960 | Ayanami class |
| Makinami | DD-112 | 2002 | Takanami class |
| Makishima | MSC-677 | 1994 | Uwajima class |
| Makishio | SS-567 | 1971 | Uzushio class |
| Makishio | SS-593 | 1999 | Oyashio class |
| Mashu | AOE-425 | 2003 | Mashu class |
| Matsu | PF-286 | 1943 | ex-USS Tacoma class |
| Matsushima | MS-21/MSI-686 | 1945 | ex-IJN Pa-1 class |
| Matsuyuki | DD-130 | 1984 | Hatsuyuki class |
| Michishio | SS-564 | 1967 | Asashio class |
| Michishio | SS-591 | 1997 | Oyashio class |
| Miho | MST-472 | 1945? | ex-US Army transport |
| Mikuma | DE-217 | 1971 | Chikugo class |
| Mikura | MSC-612 | 1960 | Kasado class |
| Mimitsu Maru | MS-42 | Auxiliary sweepers | |
| Minase | MSC-627 | 1967 | Kasado class |
| Minegumo | DD-116 | 1967 | Minegumo class |
| Mineyuki | DD-124 | 1982 | Hatsuyuki class |
| Misago | PC-307 | 1956 | Kamome class |
| Miura | LST-4151 | 1974 | Miura class |
| Miyajima | MSC-651 | 1979 | Hatsushima class |
| Miyajima | MSC-690 | 2003 | Sugashima class |
| Miyake | MSC-632 | 1970 | Takami class |
| Miyakodori | MS-12 | 1944 | ex-IJN CHa-1 class |
| Miyato | MSC-639 | 1973 | Takami class |
| Miyuki Maru | Auxiliary sweepers | ||
| Mizutori | PC-311 | 1959 | Mizutori class |
| Mochishio | SS-574 | 1980 | Yushio class |
| Mochishio | SS-600 | 2006 | Oyashio class |
| Mochizuki | DD-166 | 1968 | Takatsuki class |
| Mogami | DE-212 | 1961 | Isuzu class |
| Momi | PF-284 | 1943 | ex-USS Tacoma class |
| Moroshima | MSC-663 | 1943 | ex-USS Albatros class |
| Moroshima | MSC-667 | 1987 | Hatsushima class |
| Motobu | LST-4102 | 1973 | Atsumi class |
| Murakumo | DD-118 | 1969 | Minegumo class |
| Murasame | DD-107 | 1958 | Murasame class |
| Murasame | DD-101 | 1994 | Murasame class (II) |
| Muroto | ARC-482 | 1979 | Muroto |
| Muroto | ARC-483 | 2012 | Muroto |
| Murotsu | MSC-637 | 1971 | Takami class |
| Mutsure | MSC-619 | 1963 | Kasado class |
| Muzuki | MSC-641 | 1974 | Takami class |
| Myoko | DD-175 | 1994 | Kongo class |
| Nadeshiko | 1945? | ex-US LSSL type | |
| Nadashio | SS-577 | 1983 | Yushio class |
| Nagashima | MSC-680 | 1996 | Uwajima class |
| Nagato Maru | MS-34 | Auxiliary sweepers | |
| Nagatsuki | DD-167 | 1969 | Takatsuki class |
| Naniwa Maru | MS-37 | Auxiliary sweepers | |
| Naoshima | MSC-684 | 1999 | Sugashima class |
| Nara | PF-282 | 1943 | ex-USS Tacoma class |
| Narushima | MSC-657 | 1982 | Hatsushima class |
| Narushio | SS-569 | 1972 | Uzushio class |
| Narushio | SS-595 | 2001 | Oyashio class |
| Nasami | MST-471 | 1945? | ex-US Army transport |
| Natsugumo | DD-117 | 1968 | Minegumo class |
| Natsushio | SS-523 | 1962 | Natsushio class |
| Natsushio | SS-584 | 1990 | Harushio class |
| Nemuro | LST-4103 | 1977 | Atsumi class |
| Nichinan | AGS-5105 | 1998 | Nichinan |
| Niijima | MSC-655 | 1981 | Hatsushima class |
| Niijima | MCL-722 | 1981 | Hatsushima class |
| Ninoshima | MSC-662 | 1943 | ex-USS Albatros class |
| Ninoshima | MSC-650 | 1979 | Hatsushima class |
| Nire | PF-287 | 1943 | ex-USS Tacoma class |
| Nishikidori | MS-57 | 1944 | ex-IJN CHa-1 class |
| Nishiki Maru | MS-66 | Auxiliary sweepers | |
| Niyodo | DE-221 | 1973 | Chikugo class |
| Nogiku | LSSL-413 | 1945? | ex-US LSSL type |
| Noshiro | DE-225 | 1976 | Chikugo class |
| Noto | LSU-4172 | 1980 | Yura class |
| Notojima | MSC-682 | 1997 | Sugashima class |
| Nuwajima | MSC-657 | 1943 | ex-USS Albatros class |
| Nuwajima | MSC-662 | 1985 | Hatsushima class |
| Ogishima | MSC-659 | 1944 | ex-USS Albatros class |
| Ogishima | MSC-666 | 1987 | Hatsushima class |
| Ogishima | MCL-726 | 1987 | Hatsushima class |
| Oi | DE-214 | 1963 | Isuzu class |
| Ojika | LST-4152 | 1975 | Miura class |
| Okichidori | MS-68/MSA-451 | 1939? | ex-IJN 180t aircraft rescue craft |
| Okishio | SS-576 | 1982 | Yushio class |
| Okitsu | MSC-646 | 1977 | Takami class |
| Omi | MSC-644 | 1976 | Takami class |
| Omi | AOE-426 | 2004 | Mashu class |
| Onami | DD-111 | 1960 | Ayanami class |
| Onami | DD-111 | 2001 | Takanami class |
| Ondo Maru | MS-55 | Auxiliary sweepers | |
| Oniyuri | LSSL-436 | 1945? | ex-US LSSL type |
| Oshima | MS-29/MSI-689 | 1945 | ex-IJN Pa-1 class |
| Oshima | MSC-654 | 1981 | Hatsushima class |
| Oshio | SS-561 | 1964 | Oshio |
| Osumi | LST-4001 | 1944 | ex-US LST type |
| Osumi | LST-4001 | 1996 | Osumi class |
| Otaka | MS-86 | 1944 | ex-IJN CHa-1 class |
| Otaka | PC-310 | 1959 | Umitaka class |
| Otaka | PG-826 | 2002 | Hayabusa class |
| Otori | MS-82 | 1943 | ex-IJN CHa-1 class |
| Otori | PC-313 | 1960 | Mizutori class |
| Otoshima | MS-20/MSI-681 | 1945 | ex-IJN Pa-1 class |
| Otsu | MSC-621 | 1964 | Kasado class |
| Otsu | MST-474 | 1964 | Kasado class |
| Oyashio | SS-511 | 1959 | Oyashio |
| Oyashio | SS-590 | 1996 | Oyashio class |
| Oyodo | DE-231 | 1989 | Abukuma class |