Cramer: 'There's bubbling everywhere'

Cramer: 'There's bubbling everywhere.'

On the heels of a rash of tech IPOs and multibillion-dollar valuations of soon-to-be public companies, CNBC's Jim Cramer warned investors of "bubbling" throughout areas such as cloud computing, organic food and 3-D printing.

"In other words, there's bubbling everywhere, and it does worry me," Cramer said Friday on "Squawk on the Street." "We saw too much cloud. We saw too much organic food. And now I think we're getting too much of a whole set of areas."

(Read more: What investors need to know about 3-D printing)

Cramer cited niche companies such as Violin Memory, a flash storage device maker, and Voxeljet, which manufactures 3-D printers. Both stocks have fallen sharply since their companies recently went public.

Cramer also mentioned companies such as Sprout and Fresh Market as part of this niche bubble.

"So yes, we need to be careful," Cramer said.

(Read more: Transfat ban just the beginning: Whole Foods boss)

—By CNBC's Jeff Morganteen. Follow him on Twitter at @jmorganteen and get the latest stories from "Squawk on the Street." Reuters contributed to this report.