How many movies have Akitoshi Yokoyama and Nobutake Ito collaborated on?

They have worked on 3 movies together! Their first movie together was Mobile Suit Gundam: The 08th MS Team - Miller's Report (1998) while their highest rated movie together was Summer Wars (2009). They have not worked together since Summer Wars (2009). They are most known for their animation films together.

Summer Wars (2009)

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Key Animation
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Key Animation

Escaflowne: The Movie (2000)

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Key Animation
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Key Animation
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Animation Supervisor

Mobile Suit Gundam: The 08th MS Team - Miller's Report (1998)

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Key Animation
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Key Animation
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Animation Director