| Ian Wace |
| IBEX 35 (Iberia Index) |
| Ibovespa Index |
| IDEX Corporation (IEX) |
| IDEXX Laboratories (IDXX) |
| IEC (International Electrotechnical Commission) |
| Illinois Tool Works (ITW) |
| Illumina (ILMN) |
| Income statement |
| Incyte Corporation (INCY) |
| Independent Software Vendors (ISVs) |
| Index |
| Indian Rupee (INR) |
| Indonesia Stock Exchange |
| Indonesian Rupiah (IDR) |
| Industrial Internet of Things (IIoT) |
| Industry Ventures |
| Inertial Measurement Unit (IMU) |
| Informatica |
| Infrastructure as a Service (IaaS) |
| Ingersoll Rand (IR) |
| Initial Public Offering (IPO) |
| Insight Partners |
| Insolvency process in United Kingdom |
| Instagram |
| Installment |
| Insulet Corporation (PODD) |
| Insurance |
| Integrated Carbon Observation System (ICOS) |
| Integrated circuits (ICs) |
| Integrated Device Manufacturers (IDMs) |
| Intel Corporation (INTC) |
| Intelligent Operating Solutions (IOS) |
| Intensive care unit (ICU) |
| Intercontinental Exchange (ICE) |
| Interest rate |