| Jaya Agra Wattie Tbk | JAWA | Pertanian | 30 Mei 2011 |
| Jaya Konstruksi Manggala Pratama Tbk | JKON | Konstruksi, Industri properti | 4 Desember 2007 |
| Jaya Real Property Tbk | JRPT | Industri properti | 29 Juni 1994 |
| Jaya Swarasa Agung | TAYS | — | 6 Desember 2021 |
| Jayamas Medica Industri | OMED | — | 8 November 2022 |
| Jembo Cable Company | JECC | Industri kabel | 18 November 1992 |
| Jhonlin Agro Raya | JARR | — | 4 Agustus 2022 |
| Jobubu Jarum Minahasa | BEER | — | 6 Januari 2023 |
| K-Vision | — | Televisi satelit | — |
| Kabelindo Murni | KBLM | Industri kabel | 1 Juni 1992 |
| KAI Bandara | — | — | — |
| KAI Commuter | — | Kereta api komuter | — |
| Kalbe Farma | KLBF | Industri barang konsumsi | 30 Juli 1991 |
| Kalbe Nutritionals | — | Industri layanan kesehatan | — |
| Kaldu Sari Nabati | — | Industri makanan | — |
| Kawasan Industri Jababeka Tbk | KIJA | Industri properti | 10 Januari 1995 |
| KB Bank | BBKP | Perbankan | 10 Juli 2006 |
| Kebab Turki Baba Rafi | — | — | — |
| Kedaung Indah Can | KICI | Industri barang konsumsi | 28 Oktober 1993 |
| Kedawung Setia Industrial | KDSI | Industri barang konsumsi | 29 Juli 1996 |
| Kedoya Adyaraya | RSGK | — | 8 September 2021 |
| Kentanix Supra International | KSIX | — | 8 Januari 2025 |
| Keramika Indonesia Assosiasi Tbk | KIAS | Industri dasar dan kimia | 8 Desember 1994 |
| Kertas Basuki Rachmat Indonesia | KBRI | Industri dasar dan kimia | 11 Juli 2008 |
| Ketrosden Triasmitra | KETR | — | 10 November 2022 |
| Kian Santang Muliatama | RGAS | — | 8 November 2023 |
| Kimia Farma | KAEF | Industri barang konsumsi | 4 Juli 2001 |
| King Tire Indonesia | TYRE | — | 8 Mei 2023 |
| King Trading | — | — | — |
| Kisai Entertainment | — | Industri hiburan | — |
| Klinko Karya Imaji | KLIN | — | 9 Agustus 2022 |
| KMI Cable And Wire | KBLI | Industri kabel | 6 Juli 1992 |
| Kobexindo Tractors Tbk | KOBX | Grosir | 5 Juli 2012 |
| Koka Indonesia | KOKA | — | 11 Oktober 2023 |
| Kokoh Exa Nusantara | KOCI | — | 6 Oktober 2023 |
| Kokoh Inti Arebama Tbk | KOIN | Eceran | 9 April 2008 |
| Komodo Luxury | — | Pariwisata | — |
| Kompas Gramedia Group | — | Konglomerat | — |
| Krakatau Steel | KRAS | Metalurgi besi, Industri logam, Industri dasar dan kimia, Rekayasa, Pipa | 10 November 2010 |
| Krom Bank | BBSI | — | 7 September 2020 |
| Kurniamitra Duta Sentosa | KMDS | — | 7 September 2020 |
| Kusuma Kemindo Sentosa | KKES | — | 8 Agustus 2022 |
| Ladangbaja Murni | LABA | — | 10 Juni 2021 |
| Laksana | — | Industri otomotif | — |
| Lamicitra Nusantara | LAMI | — | — |
| Langgeng Makmur Industri | LMPI | Industri barang konsumsi | 17 Oktober 1994 |
| Lapindo International | LAPD | Industri energi, Industri infrastruktur | 17 Juli 2001 |
| Lautan Luas | LTLS | Grosir | 21 Juli 1997 |
| Lavender Bina Cendikia | BMBL | — | 11 Januari 2023 |
| Leo Pictures | — | Iklan, Industri film | — |
| Lima Dua Lima Tiga | LUCY | — | 5 Mei 2021 |
| Limas Indonesia Makmur Tbk | LMAS | Industri komputer | 28 Desember 2001 |
| Link Net | LINK | — | 2 Juni 2014 |
| Lion Metal Works | LION | Industri logam, Industri dasar dan kimia | 20 Agustus 1993 |
| Lionmesh Prima | LMSH | Industri logam, Industri dasar dan kimia | 4 Juni 1990 |
| Lippo Cikarang | LPCK | Industri properti | 24 Juli 1997 |
| Lippo General Insurance | LPGI | Jasa keuangan | 22 Juli 1997 |
| Lippo Karawaci | LPKR | Industri properti | 28 Juni 1996 |
| Lippo Securities | LPPS | — | 28 Maret 1994 |
| Logisticsplus International | LOPI | — | 11 Oktober 2023 |