NCIS - watch online: streaming, buy or rent
Currently you are able to watch "NCIS" streaming on Paramount Plus Premium, Paramount Plus Essential, Paramount Plus Apple TV Channel , Paramount+ Amazon Channel, Paramount+ Roku Premium Channel, Hulu, Philo, Netflix, YouTube TV, Netflix Standard with Ads, fuboTV or buy it as download on Apple TV Store, Fandango At Home, Amazon Video.
Besides streaming, you can also buy the series on DVD from Amazon DVD / Blu-ray and on Blu-ray from Amazon DVD / Blu-ray.
You can also stream the title for free on Spectrum On Demand.
