整块性核心（英语：Monolithic kernel），也译为集成式核心、单体式核心、宏内核、单核心，一种操作系统核心架构，此架构的特性是整个核心程序是一个单一二进位运行档，在核心空间以监管者模式（Supervisor Mode）来运行。相对于其他类型的操作系统架构，如微核心架构或混核心架构等，这些核心会定义出一个高端的虚拟接口，由该接口来涵盖描述整个电脑硬件，这些描述会集合成一组硬件描述用词，有时还会附加一些系统调用，如此可以用一个或多个模块来实现各种操作系统服务，如行程管理、共时（Concurrency）控制、内存管理等。

A monolithic kernel is an operating system architecture where the entire operating system is working in kernel space and is alone in supervisor mode. The monolithic model differs from other operating system architectures (such as the microkernel architecture) in that it alone defines a high-level virtual interface over computer hardware. A set of primitives or system calls implement all operating system services such as process management, concurrency, and memory management. Device drivers can be added to the kernel as modules.